A battalion of 3,000 North Korean soldiers will shortly join Russian troops in fighting Ukraine, marking Pyongyang’s full entry into the war.

Intelligence sources said the unit has been secretly training in Russia’s Far East ahead of deployment as part of a Russian airborne regiment.

“They are called the Buryat Battalion,” a senior Ukrainian military source told Politico. Buryatia is a remote region of Russia bordering Mongolia that the Kremlin has targeted heavily for military recruitment.

The Kyiv Independent quoted another Western intelligence source claiming that North Korea had sent 10,000 soldiers to join the Russian army.