Photo: Graffiti on Israel's security and separation wall near Bethlehem, January 2011
Israelis worry that Jordan is in a precarious state and a successful overthrow in Egypt could spread there. And if the Muslim Brotherhood were to gain power in Egypt, that would probably mean not only a stronger Islamist force in Gaza but also in the West Bank, currently run by the Fatah-dominated Palestinian Authority, as well as in Jordan, meaning Israel would feel surrounded in a way it has not in decades.
If Egypt also turned unfriendly, that would quite likely stop in its tracks any further Israeli talk of peace negotiations with the Palestinians, officials and analysts said. A peace treaty with the West Bank would involve yielding territory and military control to a relatively weak Palestinian Authority. Trading land for peace with autocrats like Mr. Mubarak, some analysts say, is not a sound basis for enduring treaties.