Barack Obama may be in Warsaw as part of a European tour, but in a real sense he’s stuck in Washington. At a joint press conference after a state meeting in Poland, Obama got questioned about the deal that exchanged Bowe Bergdahl for five high-ranking Taliban detainees, including two wanted by the UN for crimes against humanity. Obama mainly avoided discussing the detainees, although he insisted that he was “confident†that the US could prevent them from being a threat to American security in the future.Instead, Obama defended the action by focusing on Bergdahl, perhaps learning a lesson from...