North Korea is learning valuable lessons from fighting against Ukraine, making it an increased threat to its neighbors, a US official said. In recent months, North Korea has sent around 12,000 troops to fight for Russia against Ukraine as part of a new security pact between its leader,

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.