SEOUL, SOUTH KOREA — A North Korean soldier who was captured while fighting in Russia’s war against Ukraine has died of his wounds, South Korea’s spy agency said Friday. Pyongyang has deployed thousands of troops to reinforce Russia’s military, including in the Kursk border region where Ukraine mounted a shock border incursion in August. One of those North Korean soldiers was captured alive by the Ukrainian army on Thursday, a South Korean intelligence source told AFP, adding that the location where he was seized was not known. Hours later, Seoul’s National Intelligence Service (NIS) said that the soldier had succumbed