I would entirely agree about the term "rift", but not with the vision of a rift between the US and Israel. It seems to me that the rift is between the Obama administration and Israel, and that it will last as long as the Obama administration can maintain it. The mid terms in November will have an impact on the sustainability of this rift, which could be perhaps described visually as a team pushing hard against a ship roped to a dock. you can push it a few centimeters, but you have to keep pushing as otherwise the immensely strong ropes of mutual interest ans shared philosophy will drad it back to the place you started from, and which frankly there will be no visible impact an hour of so after you have stopped pushing. This rift is a waste of Obama's energy, in a "lost cause" to get the Arabs to ally themselves with the US despite Iraq, 9/11, the increasing menace of Islamo-Fascism, and just plain brownian motion.
Italian FM arrives in Iran to promote economic, political ties (Reuters)