Rich Lowry: Trump has given the U.S. the upper hand in the confrontation with Iran

It's Tehran's turn for the "fire and fury" treatment.In response to Iranian President Hasan Rouhani telling Donald Trump not to "play with the lion's tail" because "war with Iran is the mother of all wars," the president fired back in an emphatically all-caps tweet warning of "CONSEQUENCES THE LIKES OF WHICH FEW THROUGHOUT HISTORY HAVE EVER SUFFERED BEFORE."Since the last time Trump theatrically threatened a regime with destruction he quickly turned around and had warm talks with Kim Jong Un in