It's now unarguable that the war on Iran is one of the most blatant crimes of aggression in history.
It's pretty remarkable to look at the difference between the run-up to the 2003 Iraq War and this 2026 Iran War. Before starting the war in Iraq, the Bush administration spent most of 2002 manufacturing the case for war, including the infamous Colin Powell presentation about Iraq's WMD program before the U.N., which led to numerous votes by the U.N. Security Council condemning Iraq. While the U.N. itself never sanctioned the use of military force, the Bush administration went to great lengths to build as much legitimacy for the war as possible, including a months-long media campaign to warm up the American public, getting a joint Congressional authorization of force from the House and Senate, and gathering what allies they could (the much ballyhooed "Coalition of the Willing", which was really just the U.K. with Australia as a minor partner at the time of the invasion, but which later included several thousand troops from over twenty small countries).
In contrast, Trump and Netanyahu seem to have basically just YOLOed this war by themselves, judging that they could cause the collapse of the Iranian regime (or at least inflict major damage to it) by assassinating Khamenai and other senior leaders, and that in doing so they would receive only minor blowback. There was no consultation with allies in NATO or with the U.N., no approval from Congress, and blatant disregard for decades' worth of wargames and military analysis/intelligence warning of the significant risks posed by a war with Iran, including the closing of the Strait of Hormuz, which has now happened (and again, which was eminently predictable and had been predicted in this exact scenario
for decades).
The fact that that a pair of deranged septuagenarians managed to singlehandedly steer the entire world into a serious economic crisis and a conflict that puts us on the brink of nuclear war is almost unbelievable. And yet here we are. I remain hopeful that an exit ramp will be found soon, as it becomes clear to all parties that this simply cannot continue, but it's very possible things will only escalate further. Indeed, we may now be trapped in a escalatory spiral, where neither Iran, the U.S. or Israel feel like they can back down. And given that the U.S. and Israel are exhausting the limits of their conventional military air power, that Iran seems willing to fight to the death, and that a ground invasion seems both politically and logistically impossible, we may soon be facing the prospect of the U.S. and Israel legitimately threatening Iran with nuclear annihilation if they do not reopen the Strait of Hormuz.