Russia's claims that Ukraine is delaying exchange of soldiers' bodies are untrue, Ukrainian officials said on Saturday, urging Moscow to stop "playing dirty games" and return to constructive work. Kremlin aide Vladimir Medinsky said on Saturday that Ukraine had unexpectedly postponed exchanging prisoners of war and accepting the bodies of killed soldiers for an indefinite period.

Russia's military released the statement after Ukrainian officials said Russia had launched an intense missile and drone barrage at Kyiv, the Ukrainian capital, in the early hours of Friday and that three people had been killed.

Ukraine says that a large Russian drone-and-missile attack has targeted the eastern city of Kharkiv, killing at least three people and injuring 21.

The air assault killed at least three people. Kharkiv’s mayor described it as “the most powerful attack” since the beginning of the war.

Ukrainian President Volodymyr Zelenskyy rejected President Donald Trump’s idea that Russia and Ukraine are like kids at the playground who would be better off fighting for a while before being pulled apart.

President Trump spoke with Russia's Vladimir Putin yesterday, who vowed strong retaliation for Ukraine’s drone attacks deep inside Russia. NBC News’ Keir Simmons reports more. Igor Novikov, former Advisor to Ukrainian President Zelenskyy,