The Baltic Sea and the Black Sea: Grain, Geopolitics and the Economics of Strangling Russia
By Matthew Parish
Monday 19 October 2026
There is an old principle of economic warfare that is as applicable to the twenty-first century as it was to the Napoleonic era: if your adversary controls an indispensable commercial route, find another route that he cannot control, or prevent him from using the routes upon which he himself depends. The Russian invasion of Ukraine has transformed this elementary observation into one of the most consequential geopolitical struggles of the contemporary world. The Baltic Sea and the Black Sea, although geographically separated by the vast plains of eastern Europe, have become two interconnected theatres of economic confrontation. The latest proposal from the Baltic states, to prevent Russian grain from passing through their ports in order to compel Moscow to reopen the Black Sea to international commerce, represents a potentially important development in the economic strategy of the war.
The proposal is deceptively simple. Russia has sought to prevent Ukraine from exporting its agricultural produce through the Black Sea while simultaneously attempting to preserve its own agricultural exports by diverting them through the Baltic ports of European Union member states. The Baltic governments, particularly those of Latvia, Lithuania and Estonia, now recognise that this arrangement creates a peculiar asymmetry: European infrastructure is facilitating Russian exports while Russian military operations are obstructing Ukrainian commerce. The question is whether denying Moscow access to the Baltic route might create sufficient economic pressure to persuade the Kremlin that restoring commercial navigation in the Black Sea is preferable to the continued disruption of international agricultural trade. It is an ingenious proposal because it seeks to turn the geography of European commerce against the aggressor without requiring another European soldier to enter the battlefield.
The geography of economic warfare
To understand the significance of this proposal, we must begin with geography. Ukraine and southern Russia occupy some of the most productive agricultural land on earth. The great expanses of fertile black soil, or chornozem, stretching across southern Ukraine and into Russia, have historically supplied enormous quantities of grain to international markets. During the nineteenth century, Odesa emerged as one of the great grain-exporting ports of the Russian Empire, and the agricultural wealth of Ukraine became fundamental to the economic development of the entire region. The importance of the Black Sea to European agricultural commerce is therefore nothing new. What has changed is that the sea has become an increasingly dangerous commercial environment in which civilian shipping may be attacked by missiles, drones and other instruments of modern warfare.
The economics of exporting grain are unforgiving. Grain is a comparatively low-value bulk commodity, traded internationally in enormous quantities with relatively modest profit margins. A railway wagon carrying wheat across a continent cannot ordinarily compete on cost with a large merchant vessel transporting tens of thousands of tonnes across the sea. The difference is not merely one of fuel consumption. Railways require tracks, locomotives, specialised wagons, terminals, transhipment facilities and complicated international customs arrangements. Maritime transportation, once the cargo has reached a suitable port, permits extraordinary economies of scale. For Ukraine, whose principal agricultural regions are oriented towards the Black Sea, the ports of Odesa, Chornomorsk and Pivdennyi are therefore not simply commercial conveniences. They constitute essential instruments of national economic survival.
Russia faces a similar geographical problem. Although it possesses a vastly larger territory and additional access to ports in the Baltic Sea, its principal agricultural export infrastructure has historically been concentrated around the Black Sea and the Sea of Azov. These maritime outlets connect Russian agricultural producers to markets in the Middle East, North Africa and Asia. The importance of this network is demonstrated by the extraordinary concentration of Russian agricultural exports through southern ports. During the 2025–2026 trading season, approximately 90 per cent of Russia’s grain exports, amounting to some 46.3 million tonnes, moved through the Black Sea and Sea of Azov region. Russian Baltic ports handled only a fraction of that volume.
This concentration creates a strategic vulnerability for both countries. Russia possesses the military resources to threaten Ukrainian maritime commerce, but Ukraine has developed increasingly sophisticated capabilities to attack Russian ports, ships and other maritime infrastructure. The result is not a symmetrical military confrontation, because Russia remains the invading power and bears responsibility for initiating the war, but it is an increasingly reciprocal economic confrontation. Both countries can impose substantial costs upon the other’s maritime activities without necessarily possessing the naval strength required to establish conventional control over the sea. Modern drones, relatively inexpensive by comparison with warships, have fundamentally altered the economics of maritime coercion.
How the Black Sea became an economic battlefield
The origins of the present crisis lie in the earliest months of the full-scale Russian invasion in February 2022, when Ukrainian ports were effectively closed to ordinary commercial shipping. The international consequences quickly became apparent because both Ukraine and Russia occupied substantial positions in global agricultural markets. Countries dependent upon imported grain, particularly in the Middle East and Africa, faced the prospect of increasing food prices at precisely the moment when international energy markets were also experiencing extraordinary disruption. The resulting diplomatic pressure contributed to the United Nations-brokered Black Sea Grain Initiative, negotiated with Turkish involvement in July 2022.
The initiative demonstrated that commercial cooperation can sometimes survive even in the midst of a bitter military confrontation. Ukrainian grain exports resumed through designated maritime corridors, subject to an elaborate system of international monitoring and inspection. By the time Russia withdrew from the arrangement in July 2023, approximately 32.8 million tonnes of grain and related foodstuffs had passed through the mechanism. This was a substantial humanitarian and commercial achievement, although it never eliminated the underlying problem that maritime trade remained exposed to the political decisions of a belligerent power. Russia’s withdrawal illustrated the fragility of an arrangement in which the security of civilian shipping depended upon the continuing consent of a government simultaneously conducting a war of aggression.
Ukraine subsequently established alternative maritime arrangements, including a coastal export corridor supported by its growing ability to challenge Russian naval operations. Yet the escalation of maritime attacks during 2026 has again severely undermined commercial navigation. By August, attacks upon shipping and port infrastructure had brought grain exports through much of the Black Sea and Sea of Azov system close to a standstill. In October, attacks upon merchant vessels near the territorial waters of Romania and Bulgaria extended the crisis towards the maritime approaches of NATO member states. This development is particularly alarming because it threatens to transform a conflict centred upon Ukrainian and Russian commerce into a much broader confrontation over the security of international navigation.
The strategic consequences extend far beyond the price of wheat. Commercial ships require insurance, and insurers calculate their premiums according to the probability of catastrophic loss. Even a modest increase in the perceived risk of missile or drone attacks can make particular maritime routes commercially uneconomic. Shipowners may refuse contracts, crews may decline to sail and financial institutions may become reluctant to underwrite transactions. In this manner, a relatively small number of military incidents can have effects disproportionate to their immediate physical consequences. Russia does not need to sink every Ukrainian grain carrier to obstruct Ukraine’s agricultural commerce. It needs only to make the voyage sufficiently dangerous and unpredictable that the ordinary mechanisms of international trade cease to function.
The Baltic states discover their economic leverage
The Baltic states occupy an unusual position in this confrontation. Estonia, Latvia and Lithuania are comparatively small countries, but they possess strategically important ports and railway infrastructure connecting the eastern European interior with international maritime markets. Their geographic position has historically made them commercial intermediaries between Russia and the wider world. This relationship survived the dissolution of the Soviet Union and, in certain sectors, even the deterioration of political relations following Russia’s successive military interventions against Ukraine. Commercial infrastructure constructed over generations cannot simply be relocated because political circumstances change.
The disruption of the Black Sea has encouraged Russian exporters to make greater use of Baltic facilities, including ports in Latvia and Lithuania. Yet this creates an obvious political contradiction. The Baltic states have been among Ukraine’s most committed international supporters, repeatedly warning that Russian territorial ambitions represent an existential danger to European security. Their ports nevertheless offer Russia a means of mitigating the consequences of the very maritime conflict that Moscow has helped create. Revenue from Russian agricultural exports does not necessarily flow directly into the Russian military budget, but it supports the country’s wider economy, generates foreign exchange and helps preserve the fiscal resources available to the Russian state.
The contradiction has now become politically intolerable. On 24 September 2026, the Latvian parliament called for legislation to end the transit of Russian and Belarusian grain through Latvian territory. Estonia proceeded further, implementing a prohibition on the transit of Russian and Belarusian cereals from 8 October. On 9 October, the leaders of the three Baltic states jointly urged the European Union to adopt a broader prohibition upon Russian grain transit. Latvian Prime Minister Andris Kulbergs has subsequently argued that coordinated European measures could force Moscow to reconsider its obstruction of Black Sea commerce.
The logic is an application of economic coercion through control over complementary infrastructure. If Russia cannot export sufficient quantities of grain through the Black Sea, it requires alternative transportation corridors. If those corridors depend upon infrastructure situated within the European Union, European governments possess an opportunity to deny Russia the economic benefits of adaptation. The objective is not necessarily to destroy Russian agricultural commerce permanently. Rather, it is to change the calculation confronting the Kremlin by making the continued disruption of Black Sea navigation more expensive than its restoration.
This is a sophisticated variation upon the traditional logic of sanctions. Conventional economic sanctions seek to reduce an adversary’s income or access to particular goods and services, thereby weakening its ability to conduct military operations. The Baltic proposal goes further by attempting to create a specific incentive for behavioural change. Russia would have something tangible to gain from restoring maritime security: renewed access to its own most efficient export routes. A properly constructed arrangement could therefore connect the relaxation of particular commercial restrictions with verifiable improvements in the security of civilian shipping, rather than relying upon indefinite economic punishment without clearly defined intermediate objectives.
The limits of economic coercion
Nevertheless, the proposition that closing Baltic ports to Russian grain will compel Moscow to reopen the Black Sea requires careful examination. Economic coercion succeeds only when the cost imposed upon the adversary exceeds the political or military value of continuing the behaviour that the coercing state seeks to change. This is not always an easy calculation, particularly when dealing with an authoritarian government that may attach greater importance to military prestige, domestic political stability or territorial ambitions than to the material prosperity of its population. The Russian leadership has repeatedly demonstrated a willingness to absorb substantial economic losses in pursuit of strategic objectives.
There is also the question of substitution. Russia possesses its own Baltic ports and can invest in their expansion. It may attempt to divert agricultural exports through alternative transport networks or seek commercial arrangements with countries less willing to participate in European sanctions. Such alternatives are neither immediate nor inexpensive, and the available evidence indicates that Russian-owned Baltic facilities possess nowhere near the capacity required to replace the country’s traditional southern export routes. Nevertheless, the existence of even partial alternatives reduces the coercive power of a European transit prohibition. A policy that makes Russian agricultural exports more expensive is not necessarily a policy that makes them impossible.
The relevant economic concept is the elasticity of substitution: the degree to which one transportation route can be replaced by another when its cost increases or its availability diminishes. Where substitution is easy, sanctions upon a particular route may merely redirect trade and create additional expenses for everyone involved. Where substitution is difficult, the economic costs become much greater and the pressure upon the sanctioned state correspondingly increases. The Baltic proposal is potentially effective precisely because the capacity of alternative Russian export routes is limited. Expanding railway connections, constructing new terminals and developing additional port facilities require capital, time and engineering resources that Russia may prefer to deploy elsewhere during wartime.
Yet even severe economic pressure does not guarantee the desired political response. Moscow could choose to retaliate against European commercial interests, intensify attacks upon Ukrainian infrastructure or simply absorb the additional costs while blaming Western governments for increasing global food prices. Russian propaganda would undoubtedly seek to present European restrictions upon grain transit as evidence that Europe, rather than Russia, was responsible for the disruption of international food supplies. This argument would have particular resonance in countries where imported wheat represents a significant component of household expenditure and where European political arguments about the morality of sanctions command comparatively little sympathy.
The law of international trade and the problem of transit
The legal framework governing the Baltic proposal is more complicated than it may initially appear. The European Union has already imposed substantial tariffs upon Russian and Belarusian agricultural imports, with measures introduced in July 2024. Those restrictions were designed to prevent Russian grain from entering the European market on favourable terms and to address concerns that Russia might be exporting agricultural produce appropriated from occupied Ukrainian territories. However, the European measures expressly distinguished imports into the European Union from goods merely passing through its territory towards third countries. The latter transactions were not covered by the same restrictions.
This distinction reflects a fundamental principle of international commercial law. Importing goods into a country and permitting those goods to transit through its territory are different legal activities. A country may prohibit the sale of particular foreign products within its domestic market while continuing to permit their passage to external destinations. International trade arrangements have traditionally afforded considerable protection to freedom of transit because global commerce would otherwise become vulnerable to the arbitrary decisions of every intermediary state along an international supply chain. The principle is particularly important for landlocked countries, whose access to maritime markets depends upon the cooperation of their neighbours.
National security considerations may justify exceptions to ordinary commercial obligations, but the exercise of those exceptions is not legally unlimited or procedurally straightforward. Within the European Union, responsibility for the common commercial policy rests principally with European institutions, while individual member states retain certain powers relevant to national security and sanctions enforcement. Latvia’s concern about unilateral legal action therefore has a substantial foundation. An EU-wide prohibition would be considerably more coherent than a patchwork of national restrictions, although its compatibility with international obligations and its precise scope would still require careful legal examination. Estonia’s existing prohibition illustrates that unilateral measures are possible in practice, but it does not eliminate the desirability of a common European framework.
The European Union must also distinguish between Russian agricultural products legitimately produced in Russia and products appropriated from occupied Ukrainian territory. Grain is a fungible commodity, meaning that wheat of similar quality from different sources can be mixed in storage facilities and transported in bulk without necessarily retaining a readily identifiable individual origin. This creates opportunities for laundering stolen Ukrainian agricultural produce through Russian commercial channels. Any serious European policy must therefore address documentation, certificates of origin, cargo inspection and the commercial intermediaries through which agricultural products reach international markets. Otherwise, a formally impressive sanctions regime may achieve remarkably little beyond encouraging more elaborate methods of concealment.
The humanitarian dilemma
There is a deeper moral difficulty in using grain as an instrument of economic warfare. Agricultural commodities are unlike most other internationally traded products because they are essential to human survival. An increase in the price of wheat may be a manageable inconvenience for a prosperous European household, but it can become a matter of genuine deprivation for a family living near subsistence in Egypt, Sudan or Yemen. Governments in countries dependent upon grain imports may be forced to divert public expenditure towards food subsidies, increasing fiscal pressures and potentially generating political instability. The consequences of agricultural disruption can therefore extend far beyond the countries directly involved in the fighting.
This creates a political opportunity for Russia. If European restrictions upon Baltic transit are presented as a blanket attempt to remove Russian grain from international markets, Moscow may seek to mobilise diplomatic opposition among importing countries. Russia could offer preferential grain arrangements to selected governments while arguing that Europe is indifferent to the consequences of its sanctions for poorer populations. Such a narrative would be selective and misleading insofar as it ignored Russian attacks upon Ukrainian maritime infrastructure, but political narratives do not need to be comprehensive to become effective. European governments must therefore ensure that their policy is intelligible not only in Brussels and Kyiv but also in Cairo, Ankara and other capitals whose governments depend upon predictable access to agricultural commodities.
The answer is to frame the restrictions as a means of restoring, rather than obstructing, international agricultural commerce. The strategic objective should be the safe and predictable export of grain from both Ukraine and Russia through the Black Sea, under arrangements that prevent military attacks against civilian shipping and protect the interests of importing countries. Internationally supervised humanitarian provisions could be incorporated where necessary to protect particularly vulnerable food-importing states. Such arrangements would require careful safeguards against sanctions evasion, but they would help distinguish a policy designed to change Russian military behaviour from one that sought simply to deprive the world of Russian agricultural production.
In this respect, the Baltic proposal could become the foundation of a wider international diplomatic initiative. The European Union might make clear that restrictions upon Russian transit would be reviewed only after sustained and independently verifiable improvements in Black Sea maritime security. Türkiye would be an indispensable participant because of its geographic position at the Bosphorus and its previous role in negotiating grain-export arrangements. The United Nations could provide a measure of international legitimacy, while maritime insurers and commercial shipping organisations would need to be involved in developing practical mechanisms through which shipping confidence could be restored. The objective would be to create a commercial security arrangement capable of surviving temporary political disagreements and military provocations.
Why Ukraine needs her agricultural revenues
For Ukraine, the significance of restoring grain exports extends beyond the agricultural sector itself. The country faces the extraordinary fiscal pressures associated with a prolonged war, including military expenditure, infrastructure reconstruction, welfare obligations and the costs of maintaining public services under conditions of recurrent Russian attacks. International assistance remains indispensable, but foreign aid cannot indefinitely replace the economic activity of an entire nation. Ukraine must preserve its capacity to earn export revenues, collect taxes and sustain the private businesses upon which future reconstruction will depend.
Agriculture is particularly important because it links several different parts of the Ukrainian economy. Farmers require machinery, fertiliser, fuel and financing. Agricultural exports generate activity in rail transportation, inland storage, port operations, banking, insurance and commercial services. When a port closes, the consequences are felt not only by the dockworkers and shipping companies immediately involved but also by producers hundreds of kilometres inland. Crops may remain unsold, storage facilities may become congested and the financing available for the next planting season may diminish. A disruption to agricultural exports can therefore damage future production as well as present commercial revenues.
Alternative European transport corridors provide some relief, but they cannot fully reproduce the efficiency of maritime exports. Ukraine has explored additional railway connections through Moldova to Romania and has increasingly relied upon ports along the Danube. These arrangements have encountered capacity limitations, congestion and high transport costs. During August 2026, substantial queues of commercial vessels developed near the Sulina Canal as the Danube system struggled to accommodate displaced agricultural traffic. Ukrainian efforts to persuade neighbouring European countries to permit further grain transit by rail reflect the same underlying problem: without the Black Sea, Ukrainian agricultural commerce becomes more expensive and its competitiveness in international markets deteriorates.
There is consequently a fundamental difference between providing Ukraine with additional financial assistance and enabling Ukraine to earn its own money. Financial assistance transfers resources from foreign taxpayers or lenders to the Ukrainian state. Restoring commercial exports allows Ukrainian producers to create income through ordinary economic activity, while reducing the country’s dependence upon external support. The distinction matters politically as well as economically. A sovereign state whose international commerce has been restored possesses greater freedom to make its own decisions than one whose fiscal survival depends upon repeated emergency negotiations with foreign governments.
The wider geopolitical struggle
The Baltic initiative also reveals something important about the changing nature of European power. For much of the post-Cold War period, European integration was associated principally with reducing barriers to trade and creating interdependence between formerly antagonistic states. The assumption underlying this model was that growing commercial relationships would make military confrontation progressively less attractive. Russia’s invasion of Ukraine demonstrated the limitations of this reasoning. Economic interdependence does not necessarily prevent aggression when one party concludes that military objectives outweigh the benefits of peaceful commerce.
Nevertheless, interdependence can create leverage when one party controls infrastructure or services upon which another depends. The European Union possesses considerable economic power because of its ports, transportation networks, financial markets, insurance services and regulatory authority over commercial transactions. These instruments may sometimes prove more effective than traditional declarations of diplomatic disapproval. The Baltic states are demonstrating that the geography of commerce can be converted into political influence if European governments are willing to accept the domestic costs of exercising it.
Those costs should not be ignored. Baltic ports and railway companies may lose revenue if Russian grain transit is prohibited. Workers and businesses dependent upon the affected commercial activities may require assistance in adapting to new markets. Governments that impose such measures must be prepared to explain why short-term economic losses are justified by longer-term security objectives. The European Union could usefully support infrastructure conversion and investment in alternative commercial activities, including facilities facilitating Ukrainian exports. In this manner, a restriction upon Russian transit could be combined with a positive programme to strengthen Ukraine’s commercial integration with the European economy.
The implications for NATO are equally significant, although NATO and the European Union must be careful not to confuse their institutional responsibilities. The security of navigation near Romanian and Bulgarian waters has become a matter of direct concern to the Atlantic alliance, particularly as attacks upon civilian vessels approach or enter areas under the jurisdiction of member states. Yet an EU prohibition upon Russian grain transit is fundamentally an economic measure, not a military blockade of Russian ports or an attempt to prevent ships from navigating the Baltic Sea by force. Preserving this distinction is important because it allows European governments to exercise commercial pressure without unnecessarily escalating the confrontation into a direct naval conflict between NATO and Russia.
Ultimately, the effectiveness of the proposal will depend upon whether European governments can translate their economic leverage into a coherent political objective. Closing Baltic transit routes may increase Russian costs, but it will not automatically make Ukrainian ports safe. A credible policy must combine economic restrictions with maritime security measures, diplomatic engagement and continuing support for Ukraine’s ability to defend its coastline and commercial infrastructure. Otherwise, Russia may simply endure the restrictions while continuing its attempts to deny Ukraine the economic benefits of maritime commerce.
The paradox of the two seas
There is a final paradox in the relationship between the Baltic Sea and the Black Sea. Russia’s invasion of Ukraine was intended, amongst other things, to strengthen Moscow’s strategic position in the northern Black Sea region and deny Ukraine freedom of action over her own coastline. Yet the consequences of the war have produced a situation in which Russia’s own commercial access to the Black Sea has become increasingly precarious, while three small Baltic states possess the potential to impose further costs upon its agricultural exports. The country that sought to dominate its neighbour’s maritime commerce now finds its own trade exposed to decisions taken in Tallinn, Riga, Vilnius and Brussels.
This is one of the recurring ironies of aggressive warfare. Military campaigns intended to increase a country’s power can instead expose vulnerabilities that were previously concealed by peaceful commercial relationships. Russia entered the full-scale war possessing substantial advantages in territory, population, resources and conventional military strength. Yet its attempt to subjugate Ukraine has encouraged European states to reassess their economic dependencies, reinforce their military alliances and reconsider the commercial privileges that Russia previously enjoyed. The Baltic grain proposal is another manifestation of this gradual transformation of European strategic thinking.
Whether the proposal will succeed remains uncertain. Much will depend upon the extent to which Russia can substitute alternative transport routes, the willingness of European governments to absorb the associated commercial losses and the credibility of any proposed arrangement for restoring Black Sea maritime security. It would be premature to imagine that a prohibition upon grain transit could by itself compel the Kremlin to abandon military operations that it regards as essential to its wider strategic objectives. Economic measures rarely produce immediate or predictable political outcomes, particularly when national prestige and authoritarian political survival are involved.
Nevertheless, the underlying idea deserves serious consideration. Europe possesses economic instruments that have not always been deployed with sufficient imagination, and the Baltic states have identified a possible means of linking those instruments to an identifiable Ukrainian national interest. The objective is not to starve Russia, nor to prevent ordinary Russian farmers from participating permanently in international commerce. It is to establish that Russia cannot simultaneously obstruct the commercial lifelines of its neighbour while expecting unrestricted access to the infrastructure of countries supporting that neighbour’s independence.
The great ports of Odesa and Riga are separated by more than a thousand kilometres of European territory, but they have become connected by the political economy of the same war. The fate of a grain carrier attempting to leave the Ukrainian coast may now be influenced by decisions about a railway shipment crossing Latvia. A conflict fought with artillery, missiles and drones has acquired an additional dimension in which railway tariffs, customs regulations, shipping insurance and port access become instruments of strategic pressure. It is a reminder that war in the modern world is not confined to battlefields. It is conducted through the networks of commerce upon which the prosperity of nations depends.
The Baltic Sea cannot physically reopen the Black Sea. But by changing the economic incentives confronting Russia, it may contribute to creating the conditions in which that reopening becomes possible. If Europe can employ its commercial power to restore the freedom of navigation rather than merely redistribute the costs of its absence, the Baltic initiative may prove to be one of the more imaginative developments in the economic diplomacy of the war. The essential principle is that the rules of international commerce cannot be expected to operate normally for a state that systematically destroys the commercial infrastructure of its neighbours. Freedom of trade is a foundation of international prosperity, but it cannot indefinitely remain a privilege enjoyed without corresponding respect for the freedom of others.
And so the fate of Ukraine’s grain may depend not merely upon the military balance around Odesa, but upon the political will of governments overlooking a different European sea. The Baltic states have identified a vulnerability in Russia’s economic position. The challenge now is whether Europe can transform that vulnerability into a durable advantage for Ukraine, while preserving the international food markets upon which millions of people depend. In a war increasingly characterised by the destruction of civilian infrastructure, reopening the Black Sea to peaceful commerce would represent something more substantial than an economic achievement. It would be a reaffirmation that Europe’s seas exist to connect nations through trade, rather than to provide additional instruments through which one nation may seek to extinguish the independence of another.
