Wrong move. Obama or whomever takes over is going to have their hands full. You just can't push our values onto a country and region that has no separation of church/state. And most certaintly are not going to end thousands of years of conflict between the Palestinians and the Israelis with a decree. 
Also, christianity really has no say in Israel. Judaism is the source of christianity and thus their land. I doubt Israel will flinch at any action Obama makes. Seeing as how the God ordered the Philistines to be ALL killed, but David did not and they came back and caused destruction. To think that Israel would form a lasting resolution with Philistine (Palestine) is going against their beliefs. You really can't dictate a country that is so embedded in history and religion. People too often confuse our christian beliefs to be parallel with Judaism or think we have a foothold there when the christianity faith accounts for about 2% of Israel.