Russia pounded Ukraine for hours with hundreds of drones and missiles overnight, killing at least four people, including a 12-year-old girl, Kyiv said Sunday.
Neighbouring Poland scrambled jets to secure its airspace in the wake of the 12-hour barrage, after NATO accused Moscow of being behind a series of violations of the defence alliance's airspace.
Diplomatic efforts to stop the war have faltered and Russia has vowed to press on with the offensive that it launched in February 2022.
"Moscow wants to continue fighting and killing and deserves only the harshest pressure from the world," Ukrainian President Volodymyr Zelensky said following the strikes, which lasted for 12 hours.
"The Kremlin benefits from continuing this war and terror as long as there are profits from energy sales," h