The defensive perimeter extends to the Khotilovo military base, which serves as an alternate landing site, and a secret biological laboratory on Lisiy Island, according to RFE/RL.

Russian attacks damaged or destroyed facilities in Zaporizhzhia, Kharkiv, Vinnytsia, and Poltava on Oct. 24-25, according to a statement.

"The next deadline is now Nov. 4, our major holiday. After that, we will be ready to resume negotiations," Yuri Ushakov said.

Perm Krai Governor Dmitry Makhonin said at around 11 a.m. local time that 11 drones had been downed during a Ukrainian attack on the region.

"Certainly, we'll do business with Ukraine and with Russia after this war ends, I would think," U.S. President Donald Trump.

Alongside attacks on Vinnytsia, Russia launched 153 Shahed-type drones at Ukraine overnight on Oct. 25, including 92 jet-powered drones, as well as low-cost Banderol cruise missiles, the Ukrainian Air Force said.

Chernihiv City Council said two private businesses were targeted in the Russian attack but provided no further details.