jeb bush's solution is that we need to raise "a sunni coalition", to go in and actually wipe isis off the map. that is the mccain-graham line too, and a mumbly version of it comes from obama. so, first question: who is in this coalition? the sunnis of anbar province? that's hilarious. the government of iraq? oops not sunnis, which is why there'll be no iraqi sunni army. the turks and saudis? no not at all. so, second: imagine that you raise some sort of sunni force, maybe involving jordan or egypt and kurds or something, with american and european air power. now this force confronts sunni islamists implicitly backed by turkey and the saudis on one hand (while terror explodes in their capitals), and a shia world (iran-iraq-assad-hezbollah) wielding or wielded by russian military forces. and you are proposing...what? a confrontation of these forces in northern syria? it's not only an unbelievable bloodbath with the possibility of spreading from africa to south asia to eastern europe, there is no plausible formula for victory.