It is basically impossible to think that President Trump’s decision to authorize the dramatic assassination of Qasem Soleimani wasn’t influenced by his looming impeachment trial. But we’re also getting more detail now on the precise chain of events leading up to it. I recommend first this Twitter thread from the Times Rukmini Callimachi. The upshot is that the claim of disrupted future attacks was thin at best, inferences drawn from Soleimani’s travel itinerary placed in the context of the shadowy game of tit for tat the two countries have been playing for the last year.
From a different perspective, this is the kind of assemblage of evidence that gets made after you make a decision — justification rather than actual reason. Callimachi has more details. But there’s nothing about the version of the evidence she presents that would make anyone think there was evidence of a threat that required imminent action. Assuming her outlines of the evidence is correct, this is after the fact justification meant to put the operation on a better legal and political footing.