North Korea has warned to launch a nuclear strike against the United States and South Korea “puppets.” The reaction has come over a joint military exercise to be conducted by Washington and its South Korean counterpart.

The Korean Central News Agency issued a statement, which calls the joint military exercise as a pretext for war. The official news agency for Pyongyang calls the South as “puppets.”

“If the enemies dare kick off even the slightest military action while vociferating about ‘beheading operation’ aimed to remove the supreme headquarters of the DPRK and ‘bring down its social system,’ its army and people will not miss the opportunity but realize the greatest desire of the Korean nation through a sacred war of justice for reunification,” The Washington Post translated the statement.

“We have a military operation plan of our style to liberate South Korea and strike the US mainland ratified by our dignified supreme headquarters,” the statement also says. “Pursuant to it, offensive means have been deployed to put major strike targets in the operation theatres of South Korea within the firing range and the powerful nuclear strike means targeting the U.S. imperialist aggressor forces bases in the Asia-Pacific region and the U.S. mainland are always ready to fire.”

On Monday, South Korea unveiled plans to impose fresh sanctions against the North. The sanctions include a port entry ban, The Korea Herald reported.

Lee Suk-joon, the minister of the Office for Government Policy Coordination, is supposed to make the announcement. The new sanctions are targeted to stop foreign-flag vessels which have the record of stopping in North Korea.

According to the North’s statement, Pyongyang will be able to “annihilate the enemies,” all provocations against it are going to stop. The North Koreans army will make the US provocations “sound as a sad dirge,” the statement says.