Ukraine's General Staff denied claims made by the chief of the General Staff of the Russian army, Valery Gerasimov, that Russian forces have captured the city of Kupiansk on Nov. 20. The statement from Ukraine's General Staff comes as Gerasimov reportedly informed Russian President Vladimir Putin of Kupiansk's alleged capture during Putin's visit

Ukraine would need to give up long-range missiles and slash its military force by half under terms of deal, officials say

The scene looks almost post-apocalyptic. A convoy of Russian soldiers emerging from thick fog and moving towards the eastern Ukrainian city of Pokrovsk. Some of the troops are riding motorcycles and mopeds;

An increasing number of women are joining the Ukrainian military, with thousands serving in front-line roles, as Russia's war on Ukraine nears its fourth year — with no peace in sight.

North Korea's involvement in the war has sparked fears of global escalation, with Seoul especially concerned of Pyongyang's troops gaining experience.