Hans Blix, the weapons inspector chief humiliated by Blair and Bush in the run up to the 2003 invasion of Iraq, gives his view (largely implicitly) on Blair's pretty chilling Chilcot grilling, during which he heavily hinted that not-only would he do it again in Iraq, with or without the WMD lies, but that he would have followed it up with an attack on Iran. While I don't agree with some of Blix's views, particularly on what I regard as Israel's entirely understandable - and genuine - security fears, he talks a heck of a lot of sense about the folly of taking on Iran without international agreement and a bloody good reason (an example of which certainly does not exist, at least yet). He also gives the lie to Blair's 2010 counterfactual pseudo-justification for the Iraq war, namely, that had there been no war then Saddam would now be locked in an arms race with Iran and Israel. Iraq would be as crippled now under Saddam as it was in 2003, Blix suggests. In other words, Blair was talking through an alternative orifice to his cakehole.
As for his point about a nuclear-armed Iran. Tell you what, I think he's right. Iran with nukes would certainly be extremely uncomfortable, but the fact remains that with the responsibility that comes with possession of the Bomb comes a sea-change in national outlook and identity. Using it as an aggressive weapon is literally suicide, given the guaranteed swiftness and totally devastating response to such a crime. Blix implies that not even the current regime in Iran is that crazy, for all its wild words and posturing. And I agree, mainly because he's probably right, but partly because just hearing a mollifying voice of reason after the endless propaganda and ignorant, one-eyed, 'blood price,' warmongering lunacy of liars like Blair is a hell of a relief.
You may disagree.