Volodymyr Zelenskyy said earlier this month that Russia was trying to "conceal losses" of North Korean troops fighting against Ukraine.

Russia launched a massive attack on Ukraine’s energy grid, leaving many in the country in the dark over the holiday. Retired Col. Jack Jacobs shares his thoughts about recent developments in Ukraine and a potential twist in North Korea’s involvement.

Russia and Ukraine have been locked in an intractable-seeming conflict that has thrown not only the two nations into a state of prolonged chaos but huge swaths of Eastern Europe as well. While ostensibly a war over territorial expansion and ethnic sovereignty,

Ukraine's air force says it detected 184 missiles and drones, causing damage to energy infrastructure across the country.

U.S. President Joe Biden said on Wednesday he had asked the Defense Department to continue its surge of weapons deliveries to Ukraine, after condemning Russia's Christmas Day attack on Ukraine's energy system and some of its cities.