Russian intelligence services had long hunted Kapustin, placing a $500,000 price on his head. After news broke of his supposed assassination, Moscow paid out the bounty, not realising the money

National security advisers from Europe and other allies have discussed security guarantees in Kyiv as the U.S.-led push to end the war in Ukraine intensifies.

December saw a new record number of Ukrainian long-range drones shot down by Russian forces, according to statistics published by the Russian Defense Ministry.

Ukraine's largest private energy company reports 90% of generation capacity damaged by Russian attacks, leaving over 1 million without power during freezing temperatures.

Ukraine Strikes Airbase Deep Inside Russia. On Dec. 21, Ukrainian intelligence announced it conducted a major strike on a Russian airbase near

A peace deal in Ukraine means more than ending the fighting now. Volodymyr Zelenskyy wants to ensure Russia does not invade his country again. The only way that can happen, he says, is if the United States guarantees Ukraine’s defense in — and against — any future war.

Follow live updates from NBC News as Russian President Vladimir Putin speaks at his annual year-end news conference on Ukraine, peace, war and Trump.

I congratulate you on returning to life’ says spy chief Budanov to Denis Kapustin, commander of a Russian unit fighting on the Ukrainian side. What we know on day 1,409