At least 14 people, including a family with three children, were wounded in an overnight Russian attack on Ukraine's northern region of Sumy, Ukraine's prime minister said on Wednesday, Reuters reported.

The strike took place at a time of intense efforts by U.S. President Donald Trump to bring an end to the Russian war in Ukraine.

Russia launched 15 drones in an assault on the Okhtyrka area in the early hours of Wednesday, local prosecutors said on the Telegram messaging app.

The children injured in the attack, which struck a residential neighbourhood in the town, were aged 5 months, 4 years and 6 years, Prime Minister Yulia Svyrydenko wrote on X, according to Reuters.