Insurgents allied with al-Qaida mount an assault on southern Mali. The French send troops and launch air strikes to stave off the attack. Islamist militants seize a foreign-owned gas field in Algeria (whose government had let the French planes use its air space) and take at least 20 westerners hostage, including two Americans. Bin Laden is dead, we’re pulling out of Afghanistan, we’d like to be through with insurgency wars generally—but insurgency wars, it seems, aren’t through with us. So what is to be done? And who should do it?