Twelve people were reported killed in Ukraine, with its air force saying 22 locations were hit by Russian air strikes.

The massive attack across Ukraine followed large strikes the night before, and casts more doubt on the U.S.-brokered peace process.

Russia, using missiles and drones, launched one of the biggest assaults on the Ukrainian capital, Kyiv, since the beginning of the war more than three years ago and hours after a prisoner exchange began.

A massive Russian drone-and-missile attack targeted the Ukrainian capital, Kyiv, and other regions in the country for a second consecutive night, killing at least 12 people and injuring dozens, officials said early on Sunday, 25 May.

As Ukrainian drones strike deep into Russian territory, they are disrupting day-to-day life and reminding Russians that the war is not confined to the trenches.

Ukrainian startup Aerobavovna is making waves with a low-tech warfare solution: helium-filled aerostats balloons that extend drone communications.

Russia fired 273 exploding drones at multiple regions of Ukraine after President Donald Trump announced he would be speaking with Vladimir Putin on Monday.

Ukraine pioneered the use of small drones on the battlefield. But in Russia’s Kursk region, Moscow’s fiber-optic cables helped turn the tide.