(LEAD) S. Korean foreign minister, U.N. chief agree on peaceful resolution of NK issues
(ATTN: UPDATES with Kang's separate meeting with Gambia's foreign minister)
NEW YORK, Sept. 23 (Yonhap) -- South Korean Foreign Minister Kang Kyung-wha and U.N. Secretary-General Antonio Guterres on Saturday agreed to seek a peaceful resolution of the