South Korea's top spy agency believes North Korea has sent more than 1 million artillery shells to Russia since August for use in the war on Ukraine, according to lawmaker Yoo Sang-bum, who attended a closed-door intelligence briefing on November 1. Yoo said the South Korean National Intelligence Service believes the shells -- roughly two months' worth of supplies for the Russians -- were sent by ship and other transport means. North Korea and Russia have been actively engaged in diplomacy, triggering concerns about North Korea supplying Russia with munitions in exchange for advanced Russian technologies.