Ukrainian leader Volodymyr Zelensky signs up top spy an arch strategist Budanov as his political enforcer - putting the man Putin fears most of all at the very top of the Kyiv government

The agent had been watching for weeks, carefully observing the movements of Russian patrols, surveillance blind spots and the irregular arrival of the cargo trains.

Russian President Vladimir Putin's defiant New Year's message contrasts sharply with President Donald Trump's diplomatic push as Ukraine-Russia war approaches fourth year.

More Russian soldiers are starting mutiny and show signs of ill discipline as they demand to be removed from the frontline around Pokrovsk in Ukraine's Donetsk region

The U.S. and Russia have been on opposing sides in Venezuela, with Moscow providing military and economic support to Maduro.

President Donald Trump expressed fresh frustration with Russian President Vladimir Putin, bristling at the Kremlin’s ongoing military operations even as the US leader seeks to bring an end to the war in Ukraine.

Defense experts questioned Russia's drone attack claims against President Vladimir Putin's residence after Moscow provides conflicting accounts of intercepted Ukrainian drones.

Russia's leader will seek to benefit from Washington's intervention but will also worry he could be next, experts say.