The Carpathian Eight: Europe’s Strangest New Institution

By Matthew Parish

Tuesday 22 September 2026

There is something wonderfully Central European about an organisation called the Carpathian Eight apparently having only six countries unequivocally signed up to its founding declaration, one of its supposed members insisting that she is not a member at all and the European Union hovering somewhere around the proceedings despite plainly not being a Carpathian country. Yet beneath the slightly confusing nomenclature lies an interesting idea. The Carpathian Eight may prove to be one of the more imaginative pieces of Ukrainian diplomacy to have emerged from the war.

The new organisation was unveiled by Ukrainian President Volodymyr Zelenskyy at the first Carpathian Eight summit in Bukovel in western Ukraine on 18 September 2026. The original conception embraced Ukraine, Poland, Slovakia, Hungary, Romania, Czechia, Austria and Serbia, with the European Union participating alongside them. Its proposed fields of activity are remarkably broad: security, energy, transport and logistics, investment, cross-border economic cooperation and cooperation between regional and local governments. The Ukrainian government has described it not merely as a conference but as a permanent format intended to advance development across the Carpathian region.

The first curiosity is geographical. Serbia is in, despite the Carpathian Mountains occupying only a small part of her territory in the east. Hungary, meanwhile, sits squarely within the Carpathian Basin and was included in the original Ukrainian conception of the Eight, yet Budapest now says that she is out. The result is an organisation whose identity is less obviously geographical than its name suggests. It might more accurately be understood as an attempt to create a political and economic community around the wider Carpathian space: the great arc running from Central Europe into the Balkans and Ukraine.

That distinction matters. Europe already possesses a bewildering number of overlapping institutions. There is the European Union, NATO, the Council of Europe, the Organization for Security and Co-operation in Europe, the Three Seas Initiative, the Visegrád arrangements and an assortment of bilateral and regional structures. Ukraine’s decision to create another one might therefore appear unnecessary. Yet the Carpathian Eight is based upon a proposition that most of those organisations do not quite capture: that the countries lying between Germany, Russia, the Balkans and the Black Sea possess a common set of practical problems that do not correspond neatly with existing institutional boundaries.

Ukraine and Serbia illustrate the point particularly well. Ukraine is seeking membership of the European Union and is fighting a war against Russia. Serbia remains outside the European Union, maintains complicated relations with Moscow and has declined to align herself completely with the western policy towards Russia. Serbia has also declined to provide direct military assistance to Ukraine. Nevertheless Serbian President Aleksandar Vučić travelled to the inaugural summit, joining such conspicuously pro-Ukrainian leaders as Poland’s Donald Tusk and Romania’s Nicuşor Dan.

This is precisely what makes the Carpathian Eight interesting. It is not simply another coalition of Ukraine’s closest political friends. If it were, Serbia would be an improbable participant. Instead it appears designed to recognise that states may disagree profoundly about Russia, NATO, sanctions and military assistance while nevertheless sharing interests in railways, roads, electricity networks, pipelines, border crossings, industrial investment and the economic development of a historically neglected region.

That is an unusually pragmatic conception of international relations. Much European diplomacy since Russia’s full-scale invasion of Ukraine in February 2022 has necessarily been concerned with drawing political distinctions. Governments have been divided according to whether they supply weapons, support sanctions, favour Ukrainian membership of the European Union and NATO or maintain relations with Moscow. The Carpathian Eight offers a different axis around which diplomacy can operate. A Serbian government need not agree with Warsaw or Kyiv about every question concerning Russia in order to agree that better railway connections between the Balkans, Central Europe and Ukraine would be useful.

The economic ambitions are substantial. Ukrainian Prime Minister Sergii Koretskyi said that almost 100 business projects from the eight countries were to be presented, with an aggregate value of approximately €40 billion. Summit organisers separately described an Investment Lab involving roughly 90 projects seeking about €9.4 billion of investment. Reuters reported that more than 50 agreements worth over €1 billion were signed around the summit, with renewable energy representing a particularly important component. These figures refer to different categories of proposed projects and agreements, but together they indicate that Kyiv wants the C8 to be something more tangible than an annual gathering for speeches and photographs.

Energy may ultimately prove the most consequential field. The Carpathian region lies between energy producers, consumers and transit routes. Ukraine possesses substantial generating capacity, gas-storage infrastructure and, potentially, an enormous post-war renewable-energy industry. Romania is increasingly important in Black Sea energy. Poland has spent years diversifying herself away from Russian supplies. Serbia, Slovakia, Austria and Hungary have rather different energy relationships with Russia. Connecting these markets more effectively could therefore have geopolitical consequences quite disproportionate to the apparently technical business of constructing interconnectors and upgrading transmission networks.

Transport is similarly strategic. The war has demonstrated that railways and roads are not merely instruments of commerce. They determine whether weapons can move, whether refugees can escape, whether grain can reach ports and whether an economy can continue functioning under attack. Zelenskyy specifically identified logistics and military mobility among the priorities for the new framework. The Carpathians, traditionally regarded as an obstacle separating peoples, are consequently being reconceived as the centre of a network connecting them.

That is perhaps the most intriguing intellectual feature of the project. For much of European history mountains constituted borders. The Alps, Pyrenees and Carpathians divided political communities because transporting people and goods across them was difficult. Twenty-first-century infrastructure permits precisely the opposite interpretation. A mountain range can become the geographical feature around which neighbouring countries organise common economic interests. The Carpathians cease to represent Europe’s periphery and become a corridor linking the Baltic, Balkans, Black Sea and Ukraine.

Then there is Hungary.

The position of Budapest illustrates both the promise and the peculiar informality of the new institution. Hungary was initially named as one of the eight countries. A Hungarian diplomatic representative attended the summit, albeit at the relatively modest level of deputy ambassador to Kyiv. Yet Prime Minister Péter Magyar subsequently told the Hungarian parliament that Hungary had been invited but had declined to join. He said that this decision had been taken for reasons Budapest considered justified, without explaining publicly what those reasons were.

The distinction is important because it would be premature to attribute a motive to Hungary that her government has not stated. Budapest’s decision may reflect disagreements over Ukraine, institutional design, energy, bilateral questions or considerations that have not yet entered the public domain. For the moment the responsible conclusion is simply that Hungary was envisaged by Kyiv as one of the Eight, sent diplomatic representation to the summit but does not consider herself a participant in the resulting organisation.

The founding declaration makes the situation still more curious. According to reporting on the summit, it was adopted by representatives of Ukraine, Austria, Poland, Romania, Serbia and Slovakia. Hungary and Czechia were absent from that list. The C8 therefore currently looks less like a conventional international organisation with settled membership than an emerging diplomatic format whose boundaries remain under negotiation.

This apparent weakness might instead become an advantage. European institutions tend towards bureaucracy. Organisations acquire secretariats, headquarters, voting procedures, budgets, regulations and disputes about competences. Before long, considerable diplomatic energy is consumed discussing the organisation rather than whatever problem the organisation was established to solve. The Carpathian Eight currently possesses almost none of this institutional furniture. It begins as a platform rather than a supranational authority.

That permits a degree of ideological promiscuity. Austria is militarily neutral. Poland is one of NATO’s most strategically important eastern members. Serbia maintains her own distinctive policy of military neutrality and relations with Russia. Ukraine is fighting Russia. Slovakia has pursued a more qualified policy towards Kyiv than Poland or Romania. The European Union participates despite several countries in the proposed grouping not being EU members. The C8 consequently cannot operate successfully if ideological conformity becomes a condition of participation.

This may explain why Serbia’s presence is particularly important. President Vučić’s attendance demonstrates that cooperation with Ukraine need not necessarily be treated as synonymous with adopting every aspect of the broader western position towards Russia. Serbia can retain her distinctive foreign policy while participating in Ukrainian-led regional economic diplomacy. From Kyiv’s perspective, bringing Belgrade into such structures also broadens Ukraine’s diplomatic relationships beyond the circle of states already committed to extensive military assistance.

There is a further historical dimension. The lands around the Carpathians have repeatedly suffered because they lay between empires. Habsburg, Ottoman, Russian, German and Soviet power crossed and recrossed this region. Borders moved with bewildering frequency. Railways were constructed according to competing imperial priorities, and communities that had traded with one another for centuries repeatedly found themselves separated by customs posts, incompatible infrastructure and political hostility.

The European Union solved much of this problem in western Europe by making borders economically less important. Yet the eastern and south-eastern edges of Europe remain fragmented. Ukraine, Serbia and several neighbouring states occupy different institutional categories, while infrastructure frequently still reflects twentieth-century political geography. A railway line may terminate inconveniently at a frontier. Electricity grids may not possess sufficient interconnection. Roads may be inadequate. Border procedures can transform short journeys into long ones.

The Carpathian Eight therefore has the potential to pursue integration from below rather than above. Instead of beginning with the immense political question of precisely when Ukraine or Serbia might enter the European Union, governments can begin with comparatively mundane questions. Can freight move more quickly from Odesa through the Carpathians towards Central Europe? Can Serbian businesses invest more easily in western Ukraine? Can Romanian, Polish and Ukrainian electricity systems become more deeply integrated? Can regional governments obtain common European financing for roads, border crossings and industrial parks?

Such questions sound dull, which is often a sign that they are important. Grand diplomatic declarations attract headlines but infrastructure alters geography. Build a railway and patterns of commerce change. Construct an electricity interconnector and strategic dependencies change. Simplify a border crossing and neighbouring cities gradually become part of the same economic space. After twenty years of such apparently unromantic measures, political relationships can look entirely different.

There is also an unmistakable Ukrainian strategic purpose. Kyiv is attempting to ensure that Ukraine’s western integration becomes a physical fact before it is completed as a legal one. Every railway connected to Poland, every electricity cable connected to Romania and every Serbian or Austrian company investing in Ukraine creates another practical relationship between Ukraine and the rest of Europe. Integration thereby ceases to depend exclusively upon treaty negotiations in Brussels.

This is particularly significant because the European Union is itself present in the C8 framework. The institution may therefore become a bridge between EU members and candidate or non-member states rather than an alternative to the Union. Its usefulness would lie precisely in undertaking regional projects that make eventual wider European integration easier.

Hungary’s absence complicates that ambition because geography cannot be negotiated away. Hungary lies at the centre of the Carpathian Basin, and major regional transport and energy networks inevitably involve her. A Carpathian organisation without Hungary is therefore rather like an Alpine organisation without Switzerland: perfectly possible, but geographically peculiar.

Yet Budapest’s refusal need not be permanent. Because the organisation remains informal, Hungary can presumably participate later without the elaborate accession negotiations associated with established international organisations. Nor need cooperation be all or nothing. Hungarian companies, municipalities or infrastructure operators may discover practical reasons to participate in individual projects even while Budapest remains outside the political framework.

The greater danger is that the C8 becomes merely another acronym. Europe has no shortage of regional initiatives whose summits produce declarations while their practical accomplishments remain difficult to identify. The test will therefore not be the number of presidents photographed in Bukovel but whether, five years from now, there are railway lines, energy connections, industrial investments and border projects that would not otherwise have existed.

Nevertheless the underlying concept is unusually sensible. The war in Ukraine has forced Europeans to rediscover geography. Energy pipelines matter. Railway gauges matter. Mountain passes matter. Ports matter. Electricity interconnectors matter. The physical structure of Europe, temporarily obscured during the optimistic decades of globalisation, has once again become central to questions of security and prosperity.

The Carpathian Eight begins amid a certain amount of institutional comedy. Eight countries were announced; six appear on the founding declaration; Hungary says she is not joining; Czechia’s precise position within the founding commitments is less straightforward than the original eight-country label suggests; Serbia, whose foreign policy differs substantially from Ukraine’s on several major questions, enthusiastically appeared at presidential level. Yet perhaps this messiness is not an embarrassment. Perhaps it is the point.

Europe’s existing institutions organise countries according to categories: EU or non-EU, NATO or non-NATO, candidate or member, sanctioning Russia or maintaining closer relations with her. The Carpathian Eight begins with geography instead. It says, in effect, that these countries live near one another and therefore have things they ought to build together.

There is something refreshingly modest about that proposition, even though the ambitions attached to it are substantial. Ukraine has spent the last four years defending her existence through military alliances, weapons supplies and extraordinary national endurance. In Bukovel she proposed something different: that the Carpathians might become not the mountainous edge of Europe but one of its economic centres.

Serbia’s presence makes that proposition more interesting, not less. Hungary’s unexplained refusal makes the experiment stranger but also reveals its character. The C8 is not yet an alliance, still less a coherent political bloc. It is an invitation to reorganise a region around common practical interests.

Whether it eventually contains eight countries, seven, six or some different number may prove less important than the name suggests. If trains, electricity, investment and commerce begin moving more freely across the Carpathians, the institution will have achieved something. If they do not, it will become another European summit photograph. For an organisation barely three days old, however, the Carpathian Eight has already accomplished one remarkable thing. It has placed the Carpathians themselves back on the political map of Europe.