The EU’s Special Tribunal: A Triumph of Idealism Over Realism?

Europe’s faith in law and norms is a product of its own historical experience. The horrors of the 20th century led to the creation of institutions designed to prevent war and promote justice.

The European Union’s recent push to establish a special tribunal to prosecute Russian leaders for the crime of aggression in Ukraine and war crimes committed there is being hailed in Brussels and Strasbourg as a historic milestone for international justice. Yet, beneath the rhetoric of accountability and the rule of law, this initiative exposes the persistent gulf between Europe’s legalistic idealism and the hard realities of global power politics. In an era when the liberal international order is in retreat and great power rivalry is resurgent, the EU’s move risks being little more than a symbolic gesture, one that may ultimately undermine Europe’s relevance and credibility on the world stage.

The Limits of Legalism in a World of Power

Europe’s faith in law and norms is a product of its own historical experience. The horrors of the 20th century led to the creation of institutions designed to prevent war and promote justice. For decades, this approach brought stability and prosperity to the continent. But the world of 2025 is not the world of 1945. Today, the international system is shaped less by universal norms than by the interests and calculations of powerful states. The United States, China, and Russia, none of which are parties to the International Criminal Court, have demonstrated time and again that legal mechanisms lacking enforcement power are easily ignored by those with sufficient might.

The proposed special tribunal, supported by the EU, the Council of Europe, and a coalition of like-minded states, is intended to fill a gap left by the ICC’s inability to prosecute the crime of aggression against non-signatory states like Russia. Its jurisdiction will be derived from a European agreement, with the backing of several Western governments. Yet, as even its architects admit, the tribunal will face “clear legal, political, and practical obstacles, notably the immunity of sitting heads of state, heads of governments, and foreign ministers (‘troika members’) and difficulties in obtaining physical custody over potential defendants.” In other words, Vladimir Putin and his top officials will not be brought to trial unless they lose power and fall into the hands of a cooperating state.

Symbolism Without Substance

The EU’s leaders claim that the tribunal is a “solemn promise to the victims, to history, and to future generations—that justice will be done, and that sustainable peace will be built on truth, accountability, and the rule of law.” But what does this promise amount to if it cannot be enforced? The reality is that, absent regime change in Moscow, the tribunal’s indictments will remain unenforced, and its verdicts will be ignored by those they target. The spectacle of issuing arrest warrants for leaders who remain untouchable risks turning international justice into a theater of impotence.

This is not to deny the moral value of standing up for victims or documenting atrocities. But the central lesson of international relations is that law without power is little more than aspiration. The postwar order was sustained not just by institutions and treaties, but by the willingness and ability of the United States and its allies to enforce them. Today, as American focus drifts and military power is increasingly contested, Europe’s reliance on legalism appears ever more disconnected from the realities of geopolitical competition.

Power Politics Is Back

The invasion of Ukraine itself is the starkest reminder that power politics, not legal norms, determines outcomes in the international system. Russia’s actions were not deterred by international law, nor have they been reversed by legal condemnation. Instead, it has been the material support provided to Ukraine—arms, intelligence, and economic aid—that has shaped the course of the conflict. Sanctions, while rooted in national law, derive their force from the economic weight and unity of those imposing them.

The EU’s tribunal, by contrast, offers no new tools of coercion. It relies on the voluntary cooperation of states, many of whom are unwilling or unable to challenge Russia directly. Even among Europe’s own ranks, unity is fragile: some member states maintain pragmatic ties to Moscow, and others fear the consequences of further escalation. The tribunal’s creation may satisfy a moral imperative, but it does little to alter the balance of power that sustains the war.

The Risks of Overreach

By pursuing an initiative with little chance of practical success, the EU risks exposing the limits of its own influence. The spectacle of a tribunal that cannot enforce its judgments may reinforce perceptions of European weakness, confirming to adversaries that Europe is more comfortable issuing statements and drafting legal documents than wielding real power. Worse, it may encourage a sense of complacency, distracting from the urgent need to rebuild Europe’s own military and economic strength in a dangerous world.

There is also the danger of alienating potential partners. Many countries outside the West view the proliferation of international tribunals with suspicion, seeing them as tools for advancing Western interests under the guise of universal values. The EU’s move could deepen the divide between the liberal core and the rest of the world, further eroding the legitimacy of the international system it seeks to uphold.

Conclusion: Realism, Not Idealism

Europe’s commitment to justice and the rule of law is admirable. But in a world where power is increasingly decisive, the EU must recognize the limits of legalism divorced from enforcement capability. The creation of a special tribunal for Russian aggression may provide moral satisfaction, but it will not bring justice to Ukraine unless backed by real power. If Europe wishes to remain a pole in world politics, it must rediscover the centrality of power politics and realism, strengthening its own capacities, forging pragmatic alliances, and accepting that, in the end, justice is only as strong as the power that stands behind it.

Masahiro Matsumura
Masahiro Matsumura
MD Advisory Board Member Professor of International Politics and National Security Faculty of Law St. Andrew's University (Momoyama Gakuin Daigaku)