The last 2012 Presidential debate could not have made it more clear: Israel's days are numbered.
Former Nixon henchman, Henry Kissinger, said as much in a New York Post piece according to Franklin Lamb at the Foreign Policy Journal:
It’s a paper entitled “Preparing For A Post Israel Middle East”, an 82-page analysis that concludes that the American national interest in fundamentally at odds with that of Zionist Israel. The authors conclude that Israel is currently the greatest threat to US national interests because its nature and actions prevent normal US relations with Arab and Muslim countries and, to a growing degree, the wider international community.President Harry Truman failed the United States by recognizing the illegal creation of Israel.
New York Post piece here.