North Korea is gaining crucial military experience and equipment by sending troops to Russia, a U.S. official warned the United Nations, making the regime a growing threat to neighboring countries.

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 may be close to sharing advanced satellite technology with North Korea after the isolated nation supplied troops to help bolster Moscow’s war in Ukraine, United States Secretary of State Antony Blinken warned Monday.

Pyongyang has provided Moscow with more than 10,000 soldiers, artillery, and ammunition during Russia’s war as the two sides have deepened their partnership.

North Korea is learning combat lessons fighting Ukraine, a US official said. It means the authoritarian state is more of a threat to its neighbors. North Korea has dispatched around 12,000 troops to fight for Russia.

North Korea’s Role in Russia’s War The United States has raised serious concerns about North Korea’s military cooperation with Russia in the ongoing conflict between Russia and Ukraine. The warning was issued after reports confirmed that North Korean soldiers are now fighting alongside Russian forces in Ukraine.