North Korea warned Friday that it would exercise its right to self-defense "more intensively" as it condemned recent joint air drills among South Korea, the United States and Japan.

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.

North Korea warned Friday it will "more intensively" exercise the right to self-defense, denouncing South Korea, the United States and Japan for staging combined air drills, involving U.S. B-1B bombers.