1993年6月，在与美国对华和威胁退出核不扩散条约（NPT）后，朝鲜允许国际原子能机构（IAEA）进行有限度的“保障活动 ” 。
In June 1993, following talks with the US and a threat to withdraw from the Nuclear Non-Proliferation Treaty (NPT), North Korea allowed the International Atomic Energy Agency to conduct limited “safeguards activities.”