North Korean's top diplomat says "under no circumstances" will it put its nuclear weapons or ballistic missiles on the negotiating table.
Foreign Minister Ri Yong Ho also says that his country has no intention of using nuclear weapons against any country "except the U.S." He says the only way that would change is if another country joined in an American action against North Korea.
Ri had been scheduled to hold a news conference in Manila, Philippines, where Asian diplomats are gathered for a meeting of the Association of Southeast Asian Nations. Instead, Ri's spokesman handed reporters a copy of a speech that Ri had given at the meeting.
Ri says in the speech that responsibility for the Korean Peninsula crisis lies solely with Washington. He says the North is "ready to teach the U.S. a severe lesson with its nuclear strategic force."