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What is the threat moving forward? >> reporter: i think there are significant risks al qaeda is diminished, but not defeated. isis is in the country and hundreds of their fighters just released from prison. the president is insistent that the u.s. will continue to carry out anti-terrorism missions from over the horizon, but not being on the ground, of course, diminishes your ability to see the threat and to deal with it. and i think that will be a growing question, can the taliban deal with it a...