Israeli officials are nervously watching events in Egypt's sparsely populated Sinai Peninsula, worried that a power vacuum in Cairo and the withdrawal of police forces will embolden the Bedouin tribes who help smuggle weapons to Hamas militants in the Gaza Strip. In a sign of the rising tensions, Bedouin in the northern Sinai on Friday used rocket-propelled grenades to attack the headquarters of Egypt's state security in El Arish, a town close to Egypt's border crossing into Gaza, according to witnesses. Israel's fear is that with Egypt's police having all but disappeared from the peninsula—after police were asked to step...
