Russia launched drone strikes on civilian areas of Ukraine in another deadly overnight attack, Ukrainian authorities said on Tuesday, while Kyiv dismissed Russian President Vladimir Putin's declaration of a unilateral three-day ceasefire beginning next week.

Swarms of Russian drones attacked the Ukrainian cities of Kharkiv and Dnipro late on Tuesday, killing at least one person and injuring at least 46, officials said. Kharkiv, which lies in the northeast near the Russian border and is Ukraine's second-largest city,