Updated

South Korea's top diplomat tells The Associated Press that North Korea's repeated flouting of U.N. Security Council resolutions by conducting nuclear and missile tests calls into question its suitability for membership of the world body.

Foreign Minister Yun Byung-se stopped short of calling for Pyongyang's expulsion from the U.N. but said it was violating the terms under which both the Koreas had been admitted 25 years ago.

North Korea is the only nation to have conducted nuclear tests in the 21st century and is already subject to five sanctions resolutions.

Yun said in an interview late Tuesday on the sidelines of an annual gathering of world leaders, "I think all members of the U.N. have to ask themselves whether North Korea is really qualified as a member of the U.N."