A Russian drone attack on a village in the Sumy area overnight killed an 8-year-old boy and two adults and injured another three people, the military administration of the region in northeast Ukraine said early on Tuesday.

At least seven people were killed and 28 injured in Kyiv overnight as Russian drone and missile attacks again rocked Ukraine's capital, Mayor Vitali Klitschko said on Monday, describing Moscow's latest attack as "terrible.

A combined Russian missile and drone attack on Ukraine overnight killed at least 15 people — including an American citizen — and wounded scores of others, according to Ukrainian officials.