The Biden administration said that at least 3,000 North Korean troops are training in Russia, though it remains unclear if they’ll join the war.

North Korea has sent troops to Russia to support Moscow’s war in Ukraine, the United States said Wednesday, a major escalation in the conflict that has rattled Western allies.

WASHINGTON—The U.S. said thousands of North Korean troops are being trained in Russia and might be used to reinforce Moscow’s military offensive in Ukraine.At least 3,000 North Korean soldiers arrived by ship earlier this month at the Russian port of Vladivostok and moved to several training sites in eastern Russia,