North Korea has accused the United States of contributing to an "unpredictable" situation on the divided Korean peninsula.

It said the US was abusing its power in the UN Security Council to impose its "hostile policy" against North Korea.

"The US is to blame for the situation on the Korean peninsula which is inching close to an unpredictable phase now," So Se Pyong, North Korea's ambassador to the UN in Geneva, told the UN-sponsored Conference on Disarmament.