"The loss of Egypt and Jordan would also have dire consequences for Israel. Thirty years of peace with those Arab neighbors would come to an end, and Tel Aviv would (again) be surrounded by hostile foes, committed to the eradication of the Jewish State, and supported by an Iranian regime on the verge of going nuclear. That must be a part of our strategic calculus as well. If Mubarak goes, the tenure of Jordan's King Abdullah will be measured in days, and the West Bank will probably fall under the control of Hamas as well. Meanwhile, Israel's most implacable foe (Syria) sits on the Golan Heights, while Hizballah controls the "new" government in Lebanon. If that isn't a nightmare scenario for Mr. Netanyahu, we don't know what is. What is the U.S. prepared to do to ensure Israel's security in that sort of environment.
And beyond that, how do we respond when the protest movement advances to the Persian Gulf Region? Those oil-rich states, long controlled by autocratic monarchs, are ripe for revolt as well. This is hardly a movement that is limited to Egypt or Tunisia, and there are plenty of Islamists (read: terrorists) ready to stoke the fires of revolution in places like Saudi Arabia; Oman, Dubai and Kuwait."
From In From the Cold