A mass Russian drone attack killed four people, injured 19 and sparked a large fire in a hotel and restaurant complex and other buildings late on Friday in the southeastern Ukrainian city of Dnipro, the regional governor said.

Another 21 people are injured, as a restaurant and several buildings are set ablaze in the city, local officials say.

At least four people were killed in the central Ukrainian city of Dnipro by a massed Russian overnight drone strike, local officials reported, with 22 others injured.

Putin suggested Ukraine be placed under a form of temporary administration to reach a settlement in the war, Russian news agencies reported.

In the Ukraine war, it is artillery that has enabled tactically clumsy Russian infantry and armor to advance. Stalin once called it the "god of war."

Russian and U.S. officials met this week in Saudi Arabia to try to work out some sort of ceasefire in the war in Ukraine. But even as Russia talks about peace, its attacks on Ukrainian cities continues.