Officials in several Russian regions, some hundreds of kilometres from the border, reported strikes overnight.

Ukraine fired six British Storm Shadows and six US-made ATACMS ballistic missiles during its largest aerial bombardment of Russia in the war so far, Ukrainian and Russian officials have said.

Ukrainian officials say Russia has launched a major ballistic and cruise missile attack on regions across Ukraine

Ukraine has launched a "massive attack" that hit multiple targets in Russia 's Engels, Saratov, Kazan, Bryansk, and Tula, a senior Ukrainian official said. At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

Russia's military on Tuesday said it would retaliate against Ukraine after Kyiv attacked Russian regions by firing six U.S.-made ATACMS ballistic missiles, six UK-made Storm Shadow cruise missiles and launching one of the biggest drone attacks to date.

Ukrainian forces used missiles and drones on Tuesday to target sensitive military and energy sites across Russia.

The barrage appeared to be one of the largest recent assaults in Ukraine’s campaign to damage Russia’s war machine on its home territory.