Russia’s foreign minister has warned the U.S., South Korea and Japan against forming a security partnership targeting North Korea.

Relations between Russia and North Korea have flourished in recent years, with North Korea supplying troops and ammunition to support Russia's war against Ukraine in return for military and economic assistance.

The Wonsan Kalma resort was opened in a grand ceremony last month by North Korea's leader, Kim Jong Un, who hailed it as a "world-class tourist and cultural destination". The details of how this resort was built have been shrouded in secrecy in a country largely closed to the outside world.

North Korean leader Kim Jong Un said he wants the luxury resort on the eastern seacoast to become a "world destination," but the country has been reluctant to allow in foreign tourists.

Washington has said the treatment of Glavprodukt, the only U.S. company Moscow has seized, will influence a planned reset of U.S.-Russia relations.

A North Korean defector is filing civil and criminal charges against the country's leader Kim Jong Un for abuses she faced while detained in the country. Choi Min-kyung fled the North to China in 1997 but was forcibly repatriated in 2008. She said she was sexually abused and tortured after her return.