The fresh deployment comes after North Korea suffered heavy casualties on the front lines in Russia’s war against Ukraine, the South’s spy agency says.

South Korea’s spy agency says North Korea appears to have sent more troops to Russia, after its soldiers deployed on the Russian-Ukraine fronts suffered heavy casualties.

Behavior in this war, not just of Moscow and Kyiv but of other states as well, has been conditioned by Russia’s possession and Ukraine’s lack of weapons of mass destruction. Russia holds the world’s largest arsenal of nuclear warheads,