South Korea’s military says it suspects North Korea is preparing to send additional troops to Russia after its soldiers already deployed on the Russian-Ukraine war fronts suffered heavy casualties.

North Korea is likely preparing to send additional troops to Russia after suffering heavy losses in battles against Ukrainian forces, South Korea's military said Friday.

South Korea's military said on Friday that it suspects North Korea is preparing to send more troops to Russia to fight Ukrainian forces, even after suffering losses and seeing some of its soldiers captured.

Russian air defences partially repelled a massive Ukrainian drone attack overnight, intercepting and destroying 121 drones targeting 13 regions, including Moscow. Ukraine’s military said its drones hit oil facilities in Russia’s Ryazan and a microelectronics production plant in Bryansk.