Ambassador Park joined the Republic of Korea's Ministry of Foreign Affairs in 1963 and has served as deputy minister for political affairs, ambassador to Morocco and Canada, ambassador to the UN office in Geneva and GATT, chancellor of the Institute of Foreign Affairs and National Security, special envoy to Iran, Jordan, Qatar and Oman, chief representative of the ROK on the UN Security Council, and president of the UN Security Council. He is currently president of the UN Association of the Republic of Korea.