US opposes incremental denuclearization of N. Korea: envoy Stephen Biegun, US Special Representative to North Korea says Washington's goal is the complete denuclearization of North Korea, insisting it will not settle for incremental disarmament. Speaking at the Carnegie International Nuclear Policy conference in Washington, DC, Mr Biegun also says that President Trump is "100 percent supportive" of the US remaining "engaged diplomatically" despite the shortcomings of the second summit with North Korean leader Kim Jong Un, in Hanoi in February. IMAGES AND SOUNDBITES