The war between the great powers has been going on for eternity. Winning the last poker game was how America became the predominant superpower. Trying to stand in the way of these conflicts is like trying to oppose elemental forces of nature.
I only care about Iran if it hurts Trump's popularity. I only care about Iran if this turns into a protracted ground invasion. Discretionary resolution of international affairs is a presidential prerogative. Hopefully he has the wisdom to guide his ship past the rocks