Ukraine may need to think about ceding territory to Russia as part of a short-term peace agreement, according to Kyiv Mayor Vitali Klitschko, the BBC said Friday.

He claimed the notion could help end the war, even if only temporarily, but he acknowledged that it is unfair.

President Volodymyr Zelensky could have to make a "painful" deal, Klitschko continued, but he made it clear that Ukrainians will never tolerate Russian control.

The statements come after Kyiv was the target of the bloodiest attack on the city this year, a massive Russian missile and drone attack that killed at least 12 people Thursday night, according to BBC.