How Mosul Can Reshape Obama’s Foreign Policy Legacy

In mid-June of 2014, smoke rolled into the sky above Mosul, the second-largest city in Iraq. Burning Humvees littered streets that had once bustled with people. Only days earlier, the Islamic State had invaded the city, crushing the ill-equipped Iraqi security detail that had been assigned to protect it. The stunning defeat gave the radical group its first strong foothold in Iraq (most of its activity had been in Syria up to that point) and allowed it to use the city as its base of operations in the country. The…