The US-Iran war has no legal basis — and no exit strategy Commentary
The White House, Public domain, via Wikimedia Commons
The US-Iran war has no legal basis — and no exit strategy

The most dangerous wars are not the ones forced upon nations, but the ones they begin believing they can control. As the United States edges deeper into open conflict with Iran—a conflict Washington initiated with the confidence of a country accustomed to quick, decisive victories—we are drifting toward a strategic defeat of our own making. Not because Iran is stronger. Not because American forces lack skill or courage. But because Iran understands something we seem to have forgotten: a war’s outcome is shaped not by the opening strike, but by the world that follows it.

The Strait of Hormuz: Where the First Illusion Dies

The early days of the war look familiar—precision strikes, glowing arcs of cruise missiles, Pentagon briefings delivered with crisp certainty. But the illusion of control evaporates the moment Iran signals that the Strait of Hormuz is no longer safe. A single burning tanker, hit by a drone or a mine, is enough to send global markets into panic. Insurance rates spike. Shipping slows. Oil prices surge.

Iran doesn’t need to close the Strait; it only needs to make it unpredictable. The United States suddenly finds itself fighting not just Iran, but the gravitational pull of global economic anxiety. Allies begin to peel away. Domestic patience thins. And the world sees a superpower forced to negotiate not because it was defeated militarily, but because the global economy could not withstand the shockwaves of a war Washington chose to start.

A Region Ignites—and Washington Can’t Put Out the Fire

Iran’s greatest strength is not its missile arsenal but its network of partners and proxies stretching from Lebanon to Yemen. Once activated, they turn the conflict into a region-wide brushfire. American bases in Iraq and Kuwait come under attack. Israel faces sustained pressure from Hezbollah. Gulf states experience sporadic strikes that rattle their populations and markets.

The United States is no longer fighting a discrete war; it is managing a region-wide emergency with no center and no end. Every strike on Iran produces a counterstrike somewhere else. Every attempt to “restore deterrence” is met with another flare‑up. The war becomes a test of endurance, not firepower—and Iran’s regime survives to claim that it mobilized the region against American aggression.

The Regime We Tried to Break Becomes the Regime We Strengthen

Washington may believe that a devastating air campaign will weaken Iran’s leadership. But inside Iran, the experience of bombardment produces something very different: a siege mentality. Whatever grievances Iranians have with their government are overshadowed by the immediate reality of foreign attack. The regime wraps itself in the flag, silences dissent, and brands critics as collaborators.

Meanwhile, Russia, China and North Korea rush to help Iran rebuild. The war that was meant to isolate Tehran instead pushes it deeper into the embrace of America’s rivals. Years later, Iran emerges more repressive at home, more aligned with hostile powers abroad, and more determined to pursue the capabilities—especially nuclear—that it now sees as essential for survival.

The War That Outruns Its Mandate at Home

Wars that begin without a clear mandate rarely end with a clear victory. The first American casualties shift the tone instantly. The war stops being an abstraction and becomes a human story—families grieving, veterans questioning the mission, communities asking what this conflict is for.

Costs rise. Markets wobble. Congress fractures. Allies distance themselves. The war becomes a political liability, then a political crisis. Eventually, the administration seeks a way out. The ceasefire that follows may be framed as a responsible recalibration, but the perception is unmistakable: the United States ended the war without achieving its stated goals, while Iran’s leadership remains in place and claims victory.

Mission Creep: The Old Trap Springs Again

The final path to defeat is the oldest one: believing that a little more pressure—a few more operations or a limited ground presence—could “finish the job.” Special operations raids expand into larger missions. A handful of troops becomes a few thousand. The United States finds itself holding pockets of territory to prevent Iran from reconstituting its capabilities.

On the ground, the war changes character. Guerrilla attacks, roadside bombs, and ambushes become part of the daily rhythm. Local resentment grows. The conflict begins to resemble the most difficult chapters of Iraq and Afghanistan, but on a larger scale and against a more cohesive population. Withdrawal becomes inevitable. Iran’s narrative writes itself: they came, they fought, and they left.

Iran Doesn’t Need to Win — It Only Needs to Survive

Iran does not need to win militarily. It only needs to survive long enough for the world to ask the question we should have asked before the first missile was fired: on what legal authority did we do this? That question will outlast the war itself — in international courts, in the history books, and in the countries now watching to see what norms a superpower is permitted to discard.

The real question was never whether we could defeat Iran’s military. It was whether we had the right to try.

David M. Crane is a global leader in international criminal justice and the founding Chief Prosecutor of the UN Special Court for Sierra Leone. He has spent decades shaping accountability mechanisms around the world, including serving as a driving architect behind the Special Tribunal for the Crime of Aggression against Ukraine. Crane is a distinguished scholar of international law, a former senior U.S. national security official, and a leading voice on the rule of law, state responsibility, and the legal limits on the use of force.

 

 

 

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