Major shift in N.K. policy on Seoul could point to other causes of top official's death: U.S. expert

By Chang Jae-soon WASHINGTON, Dec. 31 (Yonhap) -- A major shift in North Korea's policy toward South Korea could suggest that Pyongyang's top negotiator with Seoul, Kim Yang-gon, could have died by causes other than a car crash, a U.S. expert said Thu