Ukraine: what we can learn from past frozen conflicts?

Thursday 19 March 2026

The concept of the “frozen conflict” has long occupied an ambiguous place in the study of war and peace. It suggests neither victory nor defeat, neither war nor peace, but rather a suspended condition in which violence has subsided without resolution. For Ukraine, confronting an aggressive Russian neighbour that continues to occupy parts of her sovereign territory, the prospect of such a condition is no longer theoretical. It is an increasingly plausible framework through which her future may be understood — not as a post-war settlement, but as a prolonged state of armed non-resolution.

Frozen conflicts are not new. Their origins lie largely in the geopolitical fractures of the twentieth century, particularly those left behind by the collapse of empires. The Cold War provided the conditions in which such conflicts could stabilise — or stagnate — under the shadow of nuclear deterrence and superpower rivalry. The Korean Peninsula offers perhaps the most archetypal example: since the armistice of 1953, the Democratic People’s Republic of Korea and the Republic of Korea have remained technically at war, separated by a heavily fortified demilitarised zone. Decades of intermittent negotiations, crises and diplomatic initiatives have failed to produce a formal peace treaty. Instead, a highly militarised equilibrium has persisted, shaping not only the security architecture of East Asia but also the internal political evolution of both states.

In Europe, the dissolution of the Soviet Union created a constellation of frozen conflicts that remain unresolved to this day. Transnistria, a narrow strip of land along Moldova’s eastern border, declared independence in 1990 with the backing of Russian military forces. Despite international recognition of Moldova’s territorial integrity, Transnistria has functioned as a de facto state for more than three decades, sustained economically and militarily by Moscow. Similarly the conflicts in Abkhazia and South Ossetia, territories internationally recognised as part of Georgia, were effectively frozen after the wars of the early 1990s, only to be reignited and reconfigured by Russia’s intervention in 2008. In each case Russia has acted not as a neutral mediator but as a party to the conflict, using these unresolved disputes as instruments of geopolitical influence.

These precedents are instructive for Ukraine, not because they offer direct analogies — Ukraine’s scale, resources and international support distinguish her case — but because they reveal a pattern in Russian strategic behaviour. Frozen conflicts serve Moscow’s interests by preventing the full integration of neighbouring states into Western political, economic and security structures. They create zones of instability that can be activated or de-escalated according to political necessity. They impose a constant cost on the affected states, both economically and psychologically, while allowing Russia to deny formal responsibility for ongoing hostilities.

The war in Ukraine, beginning with the annexation of Crimea in 2014 and escalating into full-scale invasion in 2022, has already passed through phases that resemble the early stages of a frozen conflict. The Minsk agreements, negotiated in 2014 and 2015, attempted to establish a ceasefire and a political framework for resolving the status of the Donbas. In practice, they produced a line of contact across which low-intensity fighting continued for years. This was not peace, but a managed instability — a proto-frozen conflict that ultimately collapsed when Russia launched her broader invasion.

The question now confronting Ukraine and her allies is whether a similar dynamic might re-emerge, albeit on a larger and more entrenched scale. If active hostilities diminish without a comprehensive political settlement — if front lines stabilise, ceasefires are intermittently observed and violated, and negotiations remain inconclusive — Ukraine may find herself living alongside a permanently contested frontier. Vast armies could remain mobilised, artillery and drones poised for renewed escalation, while civilians on both sides of the line adapt to a precarious normality.

The implications of such a scenario are profound. Economically, a frozen conflict imposes a persistent burden. Investment is deterred by uncertainty; infrastructure near the front line remains vulnerable; resources are diverted to defence rather than development. Yet history also shows that states can adapt. South Korea transformed itself into a global economic power despite the unresolved conflict with the North. Israel, although not a frozen conflict in the classical sense, has long existed under conditions of enduring security threat while maintaining a dynamic economy. Ukraine, with sufficient international support and internal resilience, could similarly pursue reconstruction and growth even in the absence of a final peace.

Politically however the effects are more complex. Frozen conflicts tend to entrench narratives of grievance and victimhood. They shape national identity around the experience of loss and resistance. In Ukraine’s case, this process is already well advanced. The war has reinforced a sense of national unity and purpose, while deepening hostility towards Russia. Over time a frozen conflict could institutionalise this antagonism, making reconciliation increasingly difficult. Generations may grow up knowing only a divided country, their perceptions of the adversary shaped not by direct experience but by inherited memory and ongoing propaganda.

Militarily, the risks are equally significant. A frozen conflict is rarely static in any meaningful sense. Ceasefires are tested, boundaries probed, technologies evolve. The line of contact becomes a laboratory for new forms of warfare — as has already been seen in eastern Ukraine with the use of unmanned aerial systems, electronic warfare and precision artillery. Both sides remain in a state of readiness, their forces adapting to the specific conditions of a long-term standoff. This creates a paradox: the absence of large-scale offensives reduces immediate casualties, yet the constant potential for escalation ensures that the conflict never truly recedes.

Diplomatically, frozen conflicts present a challenge to the international system. They exist in a grey zone between war and peace, complicating the application of international law and the work of multilateral institutions. Negotiations tend to become ritualised, with periodic summits producing incremental adjustments rather than substantive breakthroughs. External actors may lose interest over time, particularly as new crises emerge elsewhere. For Ukraine, maintaining international attention and support would be essential to avoid the gradual normalisation of territorial loss.

There is also a moral dimension to consider. A frozen conflict risks legitimising aggression by default. If occupied territories remain under foreign control for decades, the principle of territorial integrity is eroded in practice, even if upheld in rhetoric. For Ukraine, accepting such an outcome would be deeply problematic. Yet the alternatives — continued high-intensity warfare or an unfavourable negotiated settlement — may be equally difficult. The dilemma is not between good and bad options, but between different forms of imperfect justice.

Looking ahead, Ukraine’s approach to a potential frozen conflict will depend on a combination of internal and external factors. Internally her resilience — political, economic and social — will determine her capacity to sustain a long-term standoff. Externally the commitment of her allies will shape the strategic environment in which she operates. If Western support remains robust, Ukraine may be able to deter further aggression while strengthening her own institutions. If it falters, the balance could shift in ways that entrench the status quo to her disadvantage.

The history of frozen conflicts suggests that they are rarely permanent, even if they endure for decades. They may thaw abruptly, as in the case of renewed hostilities, or gradually, through diplomatic transformation. The German question, seemingly frozen for much of the Cold War, was resolved with unexpected speed in 1989–1990. Conversely other conflicts remain unresolved despite generations of effort. For Ukraine the future is likely to lie somewhere between these extremes — a prolonged period of uncertainty, punctuated by moments of crisis and opportunity.

To live with a frozen conflict is to inhabit a state of suspended resolution. It requires a society to balance vigilance with normality, to pursue development while preparing for war, to remember loss without surrendering to it. For Ukraine this may become the defining condition of her relationship with Russia in the years to come. It is not a future she has chosen. But it is one for which, increasingly, she must prepare.