A Russian strike on a nine-storey building in the city of Sumy in northern Ukraine killed eight people and wounded dozens, an official said Sunday, as Russia launched a massive drone and missile attack described by officials as the largest in recent months.

Not for the first time, Poland scrambled fighter jets as missiles headed for western Ukraine. And in the capital, Kyiv, fragments from intercepted missiles and drones fell in several places, but there were no reports of injuries.