A massive Russian drone and missile attack against Ukraine lasting 12 hours into Sunday killed at least four people in Kyiv, including a 12-year-old girl, Ukrainian authorities said.

Neighboring Poland scrambled jets to secure its airspace in the wake of the barrage, after NATO accused Moscow of being behind a series of violations of the defense 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.