There is growing intelligence that North Korea has been readying itself for a more direct role in Russia’s war in Ukraine, a move that could reverberate far beyond the frontlines of the war raging in Europe.

North Korea’s supply of munitions has already been critical to the Russian war effort. Now, there are growing fears that it is sending troops as well.

North Korea has sent 3,000 troops to Russia to support its war against Ukraine, South Korean lawmakers said on Wednesday after being briefed by the national intelligence agency, twice the amount of a previous estimate.