It is about one thing

"Israeli government officials started out urging the Obama administration to back Mr. Mubarak, administration officials said, and were initially angry at Mr. Obama for publicly calling on the Egyptian leader to agree to a transition.  “The Israelis are saying, après Mubarak, le deluge,” said Daniel Levy, a former Israeli peace negotiator. And that, in turn, Mr. Levy said, “gets to the core of what is the American interest in this. It’s Israel. It’s not worry about whether the Egyptians are going to close down the Suez Canal, or even the narrower terror issue. It really can be distilled down to one thing, and that’s Israel.”  A White House spokesman, Tommy Vietor, said on Friday that administration officials were reassuring the Israelis that “we fully understand Israel’s security concerns, and we’re making clear that our commitment to Israel’s security is unshakeable.”"