They do fund a lot of groups, but since they are Shi'a and that brand of Islam only accounts for 10% to 20% percent of all adherents, I would assess that many of the Sunni Islamic groups would be ambivalent about helping Iran. AQAP has stated publicly (via their western mouthpiece publication, Inspire) that they don't differentiate between Kafir westerners and Shi'a Muslims. While it is possible that they might choose the "greater of two evils" route, my assessment is that is highly unlikely, given the fact that AQ and other networks/groups have never really been known for their ideological flexibility, particularly in this instance which would ultimately be giving aid to the most powerful Shi'ite entitity there is, hardly something that Salafists and Wahhabists find attractive.
