Liberals such as Hillary Clinton and John McCain have argued that ISIS is the result of too little U.S. support of Syrian rebels. I've contended that ISIS is the natural result of hamstringing Assad's attempts to put down the rebels. I think this supports my contention. The International Business Times reports:
According to Syrian sources who have worked previously to locate and rescue kidnapped journalists in Syria, American journalist James Foley, who was beheaded by Islamic State in a video the militant group made public on Tuesday, was most likely used by another guerrilla group as a token of allegiance to ISIS.
According to those sources, Foley was in the hands of the Dawood Bridgade, a group that was originally aligned with relatively moderate opposition groups such as the Free Syrian Army, but recently pledged allegiance to ISIS.Why would a group aligned with the Free Syrian Army kidnap an American journalist if they were such buddies with the U.S.? The answer is that we have never been in a position to trust the Syrian rebels (speaking of the groups and not necessarily specific individuals).
(H/t Weasel Zippers).