Russia’s foreign minister warned the United States, South Korea and Japan against forming a security partnership targeting North Korea as he visited his country's ally for talks on further solidifying their booming military and other cooperation.

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.

SEOUL (Reuters) -- North Korean leader Kim Jong Un told Russia's top diplomat his country was ready to "unconditionally support" Moscow's every effort to resolve the conflict in Ukraine, state media reported on Sunday, as the two countries held high-level strategic talks.