Trump's decision to maintain the nuclear deal is the right one. Remaining committed to the deal offers the U.S. the best opportunity to de-escalate tensions between the two countries. It also relieves us of all the responsibility of preventing Iran from acquiring nuclear weapons. The multilateral Iran deal also includes the United Kingdom, France, Germany, China, and Russia. Walking away from the deal would mean assuming more of a unilateral "world's policeman" role for the U.S., something Trump eschewed on the campaign trail.