North Korea signed an agreement last year to declare those programs and began disabling its main nuclear facility at Yongbyon, with much broader disarmament steps to come in the future.

• 北韩去年签署一项协议，同意公布其核项目清单、开始拆除在宁边的主要核反应堆，并且将在未来采取更广泛的裁军步骤。