Fox News reporter James Rosen claimed intelligence sources have told him not only that Army Sgt. Bowe Bergdahl willingly collaborated with the Taliban, but that his involvement with the terrorist group may be “as serious as you can imagine.” Rosen spoke with Bill O’Reilly Wednesday night about his ongoing conversations with intelligence and Pentagon officials regarding both old and new investigations into Bergdahl’s likely desertion and possibly treasonous activities. “My reporting has shown that the intelligence community also undertook a separate [from the Army] investigation of Sgt. Bergdahl,” Rosen explained, “both his final period of active duty that culminated in...