The Democratic People's Republic of Korea (DPRK) said the country's people and army "are highly alerted to promptly foil provocations" of US-Japan-S.Korea joint naval maneuvers, the official news agency KCNA reported on Tuesday.
A spokesman for the General Staff of the Korean People's Army (KPA) said in a statement on Monday that all KPA units received an emergency order on Saturday from its supreme command to be "ready to promptly launch operations any time."
"The United States should be wholly accountable for the unexpected horrible disaster to be met by its imperialist aggression forces' nuclear strike means," said the unnamed spokesman.
According to the statement, the strike group, made up of the US super-large nuclear-powered aircraft carrier George Washington with at least 100 nuclear bombs aboard, will join in the DPRK-targeted joint naval strike maneuvers in the South Sea of Korea from Tuesday with warship groups from Japan and South Korea.
It added that the United States, which spawned the nuclear issue on the peninsula and has posed a constant nuclear threat to the DPRK, "should make a decision to move first," if it really stands for the denuclearization of the Korean Peninsula.
Meanwhile, in a statement released on Monday by spokesman for the Committee for the Peaceful Reunification of Korea, the DPRK warned that it will carry out preemptive strikes to counter military provocations by South Korea and the United States.
Pyongyang made clear that talking about denuclearization when the United States is bent on plotting to invade the country shows the level of hypocrisy on the part of Washington.
The committee then lashed out at South Korean President Park Geun-hye, saying her calls on the North to give up its nuclear program are ludicrous.