South Korea has summoned the Russian ambassador, seeking the "immediate withdrawal" of North Korean troops which it says are being trained to fight in Ukraine. About 1,500 North Korean soldiers, including those from the special forces, have already arrived in Russia, according to Seoul's spy agency.

South Korea's foreign ministry summoned the Russian ambassador in Seoul on Monday to protest over what it has called the sending of North Korean troops to Russia for deployment in Ukraine. The Kremlin

Russian ambassador says cooperation between Russia and North Korea is not directed against the interests of South Korea's security