Fundamentally he himself wants to get out of afg and Syria theatres and indeed this is the ticket he rode into power on. He is negatively influenced by deep state actors. Bolton is Cheney 2.0. Regarding Iran, it's deliberate sabre rattling by trump but he himself deliberately stops short of actual conflict. Recall the American drone being shot down. Bolton was fuming over the cancellation of the retaliatory strike.
Trump in my opinion is isolationist, pro-economic confrontation, pro-sabre rattling and pro-brinkmanship...but I believe he is anti-war.