The United States warned on Wednesday that North Korea is benefiting from its troops fighting alongside Russia against Ukraine, gaining experience that makes Pyongyang "more capable of waging war against its neighbors."

Russia has forged closer diplomatic and military ties with North Korea since Moscow invaded Ukraine in February 2022.

More than 12,000 North Korean troops are in Russia and last month began fighting against Ukrainian forces in Russia's Kursk region, Deputy U.S. Ambassador to the U.N. Dorothy Camille Shea told the United Nations Security Council.