The top nuclear envoys of South Korea and the U.S. have been discussing North Korea's denuclearization.<br /> According to Seoul's foreign ministry,... during their first phone conversation on Friday, Lee Do-hoon, representative for Korean Peninsula peace and security affairs,... and his newly-appointed U.S. counterpart Stephen Biegun, exchanged views on the outcome of the South Korean special envoys' recent visit to Pyeongyang.<br />They also agreed to cooperate to achieve peace and denuclearization on the Korean Peninsula.<br />They'll hold further discussions during Biegun's visit to Seoul early next week. <br />