 IAEA requested access to additional information and access to two nuclear waste sites at Yongbyon.North Korea rejected the IAEA request and announced on March 12, 1993, an intention to withdraw from the NPT.In 1994, North Korea pledged, under the Agreed Framework with the United States, to freeze its plutonium programs and dismantle all its nuclear weapons programs in return for the normalization of diplomatic relations and several kinds of assistance, including resources for alternative energy supplies.