Russia attacked Ukraine's capital with missiles and drones early Saturday morning, killing one and wounding over 20 people a day before talks between Ukraine and the U.S., local authorities said.

Russia has carried out some of the heaviest attacks on Kyiv in months, using an estimated 500 drones and 40 missiles, said Ukrainian President Volodymyr Zelenskyy.

Russia's defence ministry released video footage on Wednesday of what it said was a downed drone at a briefing intended to show Ukraine tried this week to attack a presidential residence and challenge Kyiv's denials that such an attack took place.

Russian forces Ukraine’s capital and key energy facilities with a massive airstrike on the eve of talks between Volodymyr Zelenskiy and Donald Trump aimed at nailing down a plan to end Moscow’s war.

The talks come after days of heavy Russian missile and drone attacks and as negotiators say a U.S.-backed peace plan is nearing completion.

President Volodymyr Zelensky of Ukraine said that the assault with hundreds of drones and missiles, lasting nearly 10 hours, showed that Moscow was not serious about peace.

"The big question remains, is Russia really willing to concede or to agree to an honest peace plan?" one analyst told NBC News.

Missile and drone attacks targeted Ukraine’s capital as Volodymyr Zelensky prepared to meet Donald Trump for peace talks

The Kremlin also said it would now "toughen" its negotiating position in talks to end Europe's worst conflict since World War II.

Ukraine is pushing back against Russia’s claims of a deadly New Year drone strike in the occupied Kherson region, saying its forces hit only military targets. Moscow accuses Kyiv of killing civilians at a hotel and café,