Russia launched its biggest missile and drone attack on Ukraine so far this year on Tuesday, according to Ukrainian authorities, cutting heat to tens of thousands of people and ending a brief reprieve agreed to by Moscow and Washington as Ukrainians grapple with plummeting winter temperatures.

The drone and missile bombardments were the latest attacks on Ukrainian energy infrastructure during a winter freeze, as peace talks have made little progress.

A day before Russian, Ukrainian and U.S. teams meet to talk peace, Putin's forces pounded Ukraine's energy infrastructure with dozens of drones and missiles.

U.S. special envoy Steve Witkoff and President Donald Trump’s son-in-law Jared Kushner will travel to Abu Dhabi for the next round of talks, two U.S. officials told NBC News.

Explosions continued throughout the night and Ukraine's Air Force warned of a ballistic missile attack on the capital. Air raid sirens sounded in several regions of Ukraine on Tuesday morning after Russia launched missiles toward Chernihiv, Kyiv and Zhytomyr oblasts.

Zelenskyy says Ukraine will "take corresponding steps" as Trump says Putin agreed to stop bombing Ukrainian cities for a week.

American negotiators trumpeted plans for a prisoner swap, but that was small recompense for months of diplomatic efforts by the Trump administration.

Ukraine destroyed a Russian fighter jet and then ambushed a rescue helicopter trying to pluck the pilot to safety, it has been reported. Footage released by Ukraine's military showed what it said was a Russian Sukhoi Su-25 crashing into the ground amid a fierce fight in the Donetsk region.