KYIV, Ukraine — Russia launched a sweeping drone assault and airstrikes across Ukraine early Sunday, killing at least four people, officials said, after U.S. President Donald Trump cast doubt over Russian President Vladimir Putin’s willingness to end the war.

Three people died and four were wounded in airstrikes on Kostyantynivka in the Donetsk region of eastern Ukraine, the regional prosecutor’s office said. Another person died and a 14-year-old girl was wounded in a drone attack on the city of Pavlohrad in the Dnipropetrovsk region, which was hit for the third consecutive night, Gov. Serhii Lysak said.

The attacks came hours after Russia claimed to have regained control over the remaining parts of the Kursk region that Ukrainian forces seized in a surprise incursion in August. Ukrainian officials said the fighting in Kursk was still ongoing.

Trump said Saturday he doubts Putin wants to end the more than 3-year-old war, expressing new skepticism a peace deal can be reached soon. Only a day earlier, Trump had said Ukraine and Russia were “ very close to a deal.”

– The Associated Press