The premier of the Democratic People's Republic of Korea (DPRK), Kim Yong Il, said Tuesday that the situation on the Korean peninsula remained tense and unstable due to the U.S. hostile policy against the DPRK, the official news agency KCNA reported. Kim Yong Il gave a report on the conference held on Tuesday celebrating the 15th anniversary of top leader Kim Jong Il's election as chairman of the National Defense Commission (NDC) of the DPRK.