While an eerie, surreal calm has fallen over US-Iranian relations, I wouldn’t assume we’re out of the woods yet. Trump had no reason to be confident that Iran’s response to his most recent escalation of violence would be little more than symbolic. Although he’s accepted that response more or less passively for now, with Trump, things can turn on a dime. Who can tell what determines his mood at any given time? Contemplating Trump’s January 3 escalation of the previously relatively low-level conflict with Iran, one might be struck by how casually the US government (and others of course) treat...