North Korea on Tuesday denounced the release of a joint fact sheet between South Korea and the United States on their trade and security agreements as formalizing their confrontational stance against Pyongyang, warning that the North will take countermeasures.

Axar.az informs, citing Yonhap, the North also said Washington's approval of South Korea's push to build a nuclear-powered submarine will lead to a "nuclear domino" effect in the region, according to the Korean Central News Agency (KCNA).

"We will take more legitimate and realistic measures to protect our sovereignty, security interests and regional peace as the U.S. and the Republic of Korea have once again formalized and made policy of their confrontational stance against our nation," the KCNA said.

South Korea and the U.S. released the document on Friday outlining the outcomes of two summits between President Lee Jae Myung and U.S. President Donald Trump in August and October. The U.S. officially approved Seoul's bid to build nuclear-powered submarines and voiced its support for the ally's drive to secure uranium enrichment and spent nuclear fuel reprocessing capabilities.