Kasich appears to be the most rational Republican but appeared to compromise himself for the FL vote in overdoing support for Israel. which Rubio and Cruz have indicated they are in the pocket of Adelson/Israel lobby.
The 1967 phoney war/(land grab) by Israel and the subsequent occupation and settlement building of the West Bank *, coupled with the dumb Iraq war (primarily for the sake of Israel** ) are the root cause of our current Middle east problems.) Trump has this matter right.
* all against US and UN resolutions and policy which we have cowardly failed to enforce , bowing to the Israel lobby, $$, and media control.- both parties .