As the death toll in Gaza escalates, so does the pressure from Washington on Israel to limit the killing. President Obama has conveyed his “concern” about Palestinian civilian casualties to Israeli Prime Minister Benjamin Netanyahu. “Hell of a pinpoint operation,” John Kerry sardonically cracked on Sunday. Former U.S. Secretary of State Madeleine Albright told CNN Tuesday that Israel appears to be “over doing it,” and is hurting its “moral authority.” But while the U.S.