What could happen if Putin used nuclear weapons in Ukraine?

Russian President Vladimir Putin

Foreign ambassadors to Ukraine visit Izyum in Kharkiv region on September 23, 2022. Ukrainian officials in the eastern Kharkiv region said on September 23, 2022 that 447 bodies had been exhumed from a mass burial site near the eastern city of Izyum recaptured from Russian forces. PHOTO | AFP

Photo credit: Gavriil Grigorov | AFP