A spokesman for the Ministry of Foreign Affairs of the Democratic People's Republic of Korea (DPRK) on Monday said the DPRK would strengthen its nuclear deterrent in a new way to cope with U.S. hostile policy and its military threat to the country.

The spokesman was quoted as saying by the official Korean Central News Agency?that recently disclosed classified U.S. documents showed the United States planned to launch nuclear attacks on the DPRK in 1954 and 1969.

And the U.S. government's "Nuclear Posture Review" released on April 6 this year excluded the DPRK from the list of countries against whom the United States would not use or threaten to use nuclear weapons.

This indicated that the United States has never dropped the idea of using nuclear weapons against the DPRK, as the present U.S. administration is "nothing different from the preceding regimes in their policy of nuclear threat to the DPRK," the spokesman said.

The spokesman did not elaborate on the new way to strengthen nuclear deterrent.