But we’ve learned since that the strike on Suleimani was almost certainly another impulsive action from an impatient president. Pentagon officials have said they were stunned by the decision. According to reporting in The Times, they gave Trump the option of an attack with the expectation that he would reject it for being too extreme. Vice President Mike Pence and Secretary of State Mike Pompeo have been pushing for an attack on Iran for some time, but the past few days of confusion — of mixed-messages and shifting rationales — are evidence that this strike was made with little thought to the consequences, justified after the fact with claims of imminent danger.

This is reckless but it isn’t shocking. Trump is not a steady hand. He’s never been one. Three years in office have neither changed his character nor enhanced his capabilities. He is as ignorant and incurious as a president as he was as a candidate (and as a would-be mogul before that). His main goal is self-preservation, and he’ll sacrifice anything to achieve it. His current assault on the authority of Congress — his refusal to have the White House or members of his administration release documents or obey subpoenas — is an attempt to escape responsibility for his own unethical (and potentially illegal) actions. He is self-involved, unethical and unstable — a dangerous combination to have for the commander-in-chief of the world’s most powerful military forces, under pressure from impeachment and a re-election campaign.

I think most observers know this. But the implications are terrifying. They suggest a much more dangerous world than the one we already believe we live in, where in a fit of pique, a single action taken by a single man could have catastrophic consequences for millions of people. This isn’t a new observation. When he was still a rival — and not one of Trump’s most reliable allies — Senator Marco Rubio of Florida warned Republicans that they shouldn’t give “the nuclear codes of the United States” to an “erratic individual.” Hillary Clinton said Trump was “temperamentally unfit to hold an office that requires knowledge, stability and immense responsibility” and that “a man you can bait with a tweet is not a man we can trust with nuclear weapons.”