North Korean Foreign Minister Pak Ui Chun, second from left, arrives at Noibai Airport in Hanoi, Vietnam, Wednesday, July 21, 2010, to attend the 43rd annual ASEAN ministers meeting and related meetings as a security guard looks on. North Korea's top diplomat will likely be on a damage control mission this week at the Asian security meeting, pleading innocent to the sinking of a South Korean warship that killed 46 sailors and has been widely blamed on Pyongyang. (AP Photo/Na Son-Nguyen)

Photo by: Na Son-Nguyen

North Korean Foreign Minister Pak Ui Chun, second from left, arrives at Noibai Airport in Hanoi, Vietnam, Wednesday, July 21, 2010, to attend the 43rd annual ASEAN ministers meeting and related meetings as a security guard looks on. North Korea's top diplomat will likely be on a damage control mission this week at the Asian security meeting, pleading innocent to the sinking of a South Korean warship that killed 46 sailors and has been widely blamed on Pyongyang. (AP Photo/Na Son-Nguyen)