With the Democrats winning the House the only way Trump will get anything done now will be by Executive Order. Perhaps a "nice little" war will help the President focus the country and allow him to exercise more executive powers....otherwise he is a lame duck President and will get little done internationally.
This article on the Unraveling of Netanyahu's ME project is worth a read:
The Unraveling of the Netanyahu Project for the Middle East
NOTE: JCPOA= The Joint Comprehensive Plan of Action, known commonly as the Iran nuclear deal or Iran deal, is an agreement on the nuclear program of Iran reached in Vienna on 14 July 2015 between Iran, the P5+1, and the European Union.