I wouldn't be so sure that Trump and his batch know what the f they're doing. If they turn up their aggressive stances things can quickly escalate. If it does end up a war though I don't think it would be with their own full planning and volition. There's 0 interest right now for the US to be involved in such a conflict. Israel on the other hand is a different story. We all know what Netenyahu thought of the Iran deal.
The Moumena3a gang should be kissing Obama's butt for leaving them with the Iran deal. May end up being his most important legacy.