Israel has no viable political endgame here: There’s just no clear route from bombardment to a sustainable peace. But the damage caused by this new conflagration won’t be limited to the Israelis and Palestinians. Israel’s military offensive already has sparked outrage and protests throughout the Arab world. The current crisis also may destabilize some of the more moderate Arab governments in the region — in Egypt, for instance — where leaders now face popular backlash if they don’t repudiate Israel.