The administration’s Syria policy has been a joke for years, and it’s getting even worse: Officials with Syrian rebel battalions that receive covert backing from one arm of the U.S. government told BuzzFeed News that they recently began fighting rival rebels supported by another arm of the U.S. government. In this case, a Syrian rebel group that the CIA has been arming in collusion with other governments came under attack from the Kurdish YPG that the Pentagon has armed to fight ISIS. U.S. support for one group is now directly undermining its effort to support another, and that’s happening because...