North Korean Vice Foreign Minister Kim Kye-gwan arrives at the Ronald H. Brown United States Mission to the United Nations in New York, July 29, 2011 file photo. REUTERS/Jamie Fine

 
North Korean Vice Foreign Minister Kim Kye-gwan arrives at the Ronald H. Brown United States Mission to the United Nations in New York, July 29, 2011 file photo. REUTERS/Jamie Fine
North Korean Vice Foreign Minister Kim Kye-gwan arrives at the Ronald H. Brown United States Mission to the United Nations in New York, July 29, 2011 file photo. REUTERS/Jamie Fine