Russia has supplied antiair missiles to North Korea in exchange for it sending troops, a top South Korean official said Friday.

South Korea's national security adviser Shin Won-sik said Russia has provided North Korea with anti-air missiles and air defence equipment in return for sending troops to support Moscow in its war against Ukraine.

A top South Korean official says Russia has supplied anti-air missiles to North Korea in exchange for it sending troops. The U.S., South Korea and others say North Korea has sent more than 10,000 troops to Russia to support its war against Ukraine.