North Korea poses the greatest threat to international security in the U.S. Pacific Command area of operations, according to the admiral nominated to oversee PACOM as the United States continues its strategic rebalance to the region. Adm. Harry Harris, the nominee for PACOM chief and currently the U.S. Pacific Fleet commander, stated in his written testimony submitted to the Senate Armed Services Committee for a Dec. 2 hearing that potential threats from North Korea would be his key focus, followed...