In Ukraine, authorities reported several Russian drone strikes, including on the northern region of Chernihiv, where firefighters were battling a blaze at a high-rise building that was sparked by Russian drone attack, Ukraine's state of emergency service said.

Ukraine's allies have agreed to put pressure on Russian President Vladimir Putin to agree to a legitimate cease-fire proposal after a virtual summit of Western nations' leaders that didn't include the United States.

Russia and Ukraine have traded heavy aerial blows with both sides reporting more than 100 enemy drones over their respective territories overnight.