Perfect! Let them fight it out, and maybe they will spend less time trying to terrorize the West. I think this is great, and I think we have Obama to thank for it. What has 40 plus years of supporting the even more fanatical Sunnis brought us? It has brought us Al Qaeda, the Taliban and ISIS. These groups are all Sunnis. Loosening the grip on Iran under Obama, allows Shias to challenge American backed Sunni dominance in the region and makes them a more equal match, which is precisely what we want. Iran may make a lot of noise, but they are much less harmful than our neanderthal "friends" over there, the Saudis, Emiratis, etc. And, by the way Hezbollah is Israels problem not ours, and they deserve it.