Israel has Iran in its sights

If diplomacy on Iran fails, by end of September, the world is most likely to face an Israeli attack on Iran's suspected nuclear weapons facilities, Micah Zenko argues in an op-ed in LA Times.
Zenko sums up four past Israeli military operations, about which Tel Aviv didn't bother to inform Washington in advance.

In October 1956, Israel, Britain and France launched an ill-fated assault against Egypt to seize control of the Suez Canal. The day before, Secretary of State John Foster Dulles grilled Abba Eban, Israel's ambassador to the U.S., about Israel's military buildup on the border with Egypt, but Eban kept quiet about his country's plans.

In June 1967, Israel initiated the Six-Day War without notice to Washington, despite President Johnson's insistence that Israel maintain the status quo and consult with the U.S. before taking action. Only days before the war began, Johnson notified Prime Minister Levi Eshkol in a personal message: "Israel just must not take preemptive military action and thereby make itself responsible for the initiation of hostilities."

On June 7, 1981, Israeli fighter-bombers destroyed the Iraqi nuclear reactor at Osirak shortly before it was to be fueled to develop the capacity to make nuclear weapons-grade plutonium. Again, Washington was not informed in advance.
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[O]n Sept. 6, 2007, (...) Israeli aircraft destroyed what was believed to be a North Korean-supplied plutonium reactor in Al Kibar, Syria. (...) An administration official noted that Israel's attack went forward "without a green light from us. None was asked for, none was given."