Thomas Friedman: "The least bad solution is a partition of Syria and the creation of a primarily Sunni protected area — protected by an international force, including, if necessary, some U.S. troops. That should at least stop the killing — and the refugee flows that are fueling a populist-nationalist backlash all across the European Union. It won’t be pretty or easy. But in the Cold War we put 400,000 troops in Europe to keep the sectarian peace there and to keep Europe on a democracy track. Having NATO and the Arab League establish a safe zone in Syria for the same purpose is worth a try. And then if Putin and Iran want to keep the butcher Assad in Damascus, they can have him." (thanks David)