Massive starvation in North Korea means the United States must remain vigilant because the communist country's military forces are aggressive, Bill Richardson, U.S. ambassador to the United Nations, said Sunday.
"This is why we have 37,000 (U.S.) troops in the Koreas, with the South Koreans, in an effort to ensure some stability in that very, very troubled peninsula," he said on NBC's "Meet the Press."
"We are concerned about aggressiveness on the part of the North Korean military," Richardson said in response to questions.
"But this is why we have four-party peace talks with us, the Chinese, South Korea, North Korea that would change the strategic outline in the Korean peninsula."
The four-nation talks on an agenda for Korean peace negotiations broke down in New York earlier this month, largely because North Korea persisted in a series of demands, rejected by U.S. officials, attempting to link food aid to progress in the talks.
No date has been set for more talks, Richardson said.