In game theory, an impasse describes a situation in which the available moves no longer produce a clear path forward. Every possible move carries costs, and none leads to an outcome that clearly resolves the position. The game has not ended, action remains possible, yet not one option is a good option. Moral reasoning can encounter a similar condition.
In principle, politics and moral values are expected to align. Political decisions derive their legitimacy from the values societies claim to uphold: justice, sovereignty, the protection of civilians, the rule of law. This expectation is not merely idealistic — it is constitutive of political authority itself. Where political action systematically diverges from moral norms, as Machiavelli counselled and the Chinese Legalists institutionalised, power may persist but legitimacy erodes; and power without legitimacy is inherently unstable, dependent on coercion rather than consent. This dynamic is less immediately visible in international politics, where no overarching authority enforces moral accountability, but it does not disappear entirely. States that consistently act in ways that contradict the values they publicly espouse face reputational costs, loss of alliance credibility, and domestic political pressure. Politics is not merely the pursuit of power; it is meant, at least in theory, to reflect the ethical commitments of the communities it governs — and when it fails to do so, that failure carries consequences.
In many situations, moral discernment is relatively straightforward. Few would seriously dispute that dictatorship, territorial conquest, or the deliberate targeting of civilians violate basic political norms. In such cases, the alignment between values and political judgment is clear. But reality does not always present such clarity. Some situations present moral configurations in which every available course of action appears compromised. The actors involved violate different principles simultaneously, and the consequences of intervention—or non-intervention—both produce harm. A moral impasse arises when every available choice demands the acceptance of a different moral violation. Consider a dispute between neighbors in an apartment building. You own the unit next door to a married couple and intend to buy their apartment to expand your own property. The husband refuses and cuts off all relations with you. Yet you control access to the building's elevator, which the couple relies on. The wife, hoping to maintain basic access to the building, attempts to remain on civil terms with you. The husband, furious at the situation, begins to abuse her and accuses her of being complicit with you while also attacking your flat. At the same time, you begin using your control over the elevator as leverage, quietly tightening the pressure in hopes that the couple will eventually give up the apartment. The conflict escalates. The wife now finds herself trapped between two forces that are both morally compromised. Submitting to her husband means enduring violence and isolation. Turning toward you means aligning herself with someone who is exploiting the situation for personal gain. Every path forward requires accepting a different injustice. She faces a moral impasse. Situations of this kind are uncomfortable because they resist the moral clarity we instinctively seek. We prefer conflicts in which right and wrong are easily distinguishable, where one actor clearly embodies justice, and another clearly violates it. Moral judgment becomes straightforward, and political alignment follows naturally. But reality often refuses such simplicity. In international politics, conflicts frequently emerge in which multiple actors simultaneously violate different principles that societies claim to uphold: the protection of civilians, the sovereignty of states, the restraint of force, the rejection of coercion and intimidation. Each actor can point to the wrongdoing of the other, and often with justification.
It is in these moments that moral reasoning reaches an impasse. However, politics does not simply pause in the waiting for clarity. Strategic considerations—security, deterrence, survival—continue to operate regardless of the ethical uncertainty surrounding them. Realpolitik moves en-passant.
In chess, the move known as en passant can appear strangely opportunistic. A pawn captures another not on the square it occupies but on the one it has just crossed. To the uninitiated, the move may seem irregular, even unfair. Yet it is not an exception to the rules of the game. The possibility is built into the rules themselves; it exists within the very framework of the game.
International politics contains a similar feature. Strategies that appear opportunistic—or even morally troubling—are often not aberrations of the system but expressions of its underlying modus operandi. Power, security, and strategic advantage remain constant forces in the conduct of states. Those who operate within the world of high politics understand this well. Leaders responsible for national decisions are rarely surprised by such behavior, even when they publicly condemn it. Their statements often serve as a diplomatic or rhetorical function, reaffirming moral norms that remain politically valuable even when strategic realities move in a different direction. For the broader public, however, the gap between moral expectations and political practice can feel jarring. It is most visible in moments of conflict, when the ethical frameworks through which societies interpret events collide with the strategic calculations of states.
How to break the deadlock?
Philosophical thought experiments frequently present dilemmas as if all choices exist simultaneously. The agent is placed before two incompatible moral obligations and asked to decide between them as though both demands emerge at the same moment. The structure of the dilemma suggests that morality has reached a deadlock. Real life rarely unfolds this way. Causal relationships are not simultaneous; they are sequential. Actions unfold over time, and so do the threats, incentives, and consequences that accompany them. What appears, in abstract reasoning, as a symmetrical dilemma is often, in practice, a series of unfolding pressures in which some dangers are immediate while others remain in potential. Breaking a moral impasse therefore requires recognizing the temporal structure of events. When multiple actors violate different principles, the task is not to resolve all violations at once. It is to identify which threat is most imminent and which can be addressed later. Political decision-making, in this sense, proceeds by neutralizing dangers sequentially rather than solving the entire moral puzzle in a single move. The deadlock dissolves once simultaneity is abandoned.
The framework developed here — that moral impasses dissolve once we abandon the assumption of simultaneity and attend instead to the sequential unfolding of events — finds one of its clearest historical illustrations in the settlement reached at the Congress of Vienna. The great powers convened in 1814 facing a genuinely intractable moral configuration. Revolutionary and Napoleonic France had spread both liberation and conquest across Europe; restoring the old order meant suppressing principles of self-determination that had already taken root in popular consciousness. Poland's fate was contested between Russia, Prussia, and Austria, each of whom had participated in its partition. The smaller nations of Europe had no meaningful voice in the deliberations that would determine their futures. Every available settlement required accepting a different injustice. What was engineered was not a just order but a sequentially stable one — prioritising the neutralisation of the most immediate danger, a recurrence of hegemonic war, over the resolution of every competing moral claim. National self-determination was deferred. The rights of Poles, Italians, and Germans were subordinated to the requirements of great-power balance. Yet the framework held for nearly four decades, and the violations it left unaddressed became the next generation's political problems — addressed, partially and imperfectly, in 1848 and after.
Similarly, preventative strategies illustrate the problem from the opposite direction. Preventative action acknowledges the sequential nature of politics by seeking a first-mover advantage. It attempts to act before a rival gains the initiative, anticipating future dangers before they materialize. Yet in doing so it introduces its own form of moral distortion: it treats a projected future threat as if it were already present. The anticipated violation is treated as morally equivalent to an actual one.
Preventative action therefore collapses causality in the opposite direction. Where moral dilemmas assume that competing wrongs occur simultaneously, preventative strategies assume that future dangers already exist in the present. Both errors stem from the same misunderstanding: the attempt to impose simultaneity on a world that unfolds sequentially. Politics, like chess, rarely resolves itself in a single decisive moment. Positions evolve, pressures accumulate, and choices are made under conditions of imperfect foresight. The task is not to solve every moral problem at once, but to navigate the unfolding sequence of events in a way that preserves the greatest degree of stability and justice possible. In this sense, no moral impasse is permanent. It is simply the moment in which the board appears frozen—just before the next move is played, even if that move is only to secure a draw.