At first, I agreed with the Trumpsters that Iran was 100% responsible.
But, on the Smerconish TV show ( he's a lawyer ) he talked about "proximate causality" instructions that are given to juries in civil court, that one effect can have a primary cause, and a number of proximate contributing causes. David Frum, a well known conservative who appears on TV and radio often, makes the case, and I'm inclined to agree.
Trump Broke It. Now He Owns It.
No doubt Iran could have been more careful, disallowing commercial traffic during the "tit for tat" climate as described by Buttigieg, but no doubt the attack on their #2 man caused a panic climate, where "in the fog of war", errors are more likely.
Like Mr. Frump explains, it all started when Trump withdrew from the Iran nuke deal noting that, he had no realistic alternative other than to increase sanctions, as if this is going to cause Iran to come crawling to Trump with their tail between their legs. Trump has an epic failure of grasping the dynamics of foreign policy consequences when it comes to a country like Iran. Moreover, he's been lying about a number of things.
I find it amusing that Trumpsters will sit idley by when Trump makes outrageous claims against dems, but when anyone makes a claim
against Trump, legitimate or otherwise, my my, they get so full of self-righteous indignation all of the sudden.