Russia has held several rounds of tactical nuclear weapons drills this year, and regularly carries out military exercises for its strategic nuclear forces.
In Russia's war against Ukraine, electronic warfare, including signal-jamming, anti-drone weapons, and innovative protections for critical military systems, has become a key piece of the conflict.
The North Korean army is one of the world's largest. As it joins Russia's war against Ukraine, its soldiers are paying a price for Kim Jong-un's geopolitical maneuvers.