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 president noted that Russian dictator Vladimir Putin is “not just maintaining his investments in aggression but doubling them.” Read also: Captured Russian marine exposes North Korean troop wipeout in Kursk Oblast - video “He has even started hiring soldiers from North Korea to continue this war.

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 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.

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 Korean Koksan howitzers spotted in Russia signal increased military aid in Ukraine conflict, escalating tensions and casualties.