Gen. John Nicholson, the top U.S. commander in Afghanistan, arrives on Capitol Hill in Washington, Thursday, Feb. 9, 2017, to testify before the Senate Armed Services Senate Committee. Nicholson says he needs a "few thousand" more troops to better accomplish a key part of the mission in the war-torn country, adding, Russia's meddling in Afghanistan is proving to be problematic. (AP Photo/J. Scott Applewhite)
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