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.

Authorities say Russian drones have slammed into two Ukrainian cities, killing at least one person in nighttime attacks

Moscow’s drone strikes have grown exponentially thanks in part to a deal with Iran to produce its Shahed drones on Russian soil. An attack overnight that focused on Kyiv killed at least 15.