U.S. Ambassador William J. Porter, left, and Gen. Charles H. Bonesteel, commander of U.S. troops in South Korea, leave the office of South Korean Premier Chung Il-Kwon in Seoul, Feb. 6, 1968, after talking with Korean officials. Chung gave Porter a protest note registering official opposition to the secret U.S.-North Korea talks at the truce village of Panmunjom. (AP Photo)