There is no legitimate justification of the Iran war. None. Iran posed no threat. Even if they did, you can’t just attack nations because you think they’re a threat. Regime change? Also nonsense. The US doesn’t get to decide which governments can exist or what weapons they can have. The US doesn’t like the idea of Iran having nuclear weapons? So what. They have as much of a right to have them as we do. Tough luck if the US doesn’t like it. North Korea has nukes and is run by a bad government. Are we attacking them? Nope. No oil and they can fight back. The Iran war is illegal.