Without providing evidence, Shoigu said Ukraine could escalate by using a "dirty bomb", or conventional explosives laced with radioactive material. Ukraine does not possess nuclear weapons, while Russia has said it could protect its territory with its nuclear arsenal. 1/3 A local man throws debris out of a broken window in a residential building heavily damaged by a Russian missile attack in Mykolaiv, Ukraine October 23, 2022. Ukrainian President Volodymyr Zelenskiy said the Russian attacks on energy infrastructure had struck on a "very wide" scale. Moscow has acknowledged targeting energy infrastructure but denies targeting civilians in what it calls a "special military operation" in Ukraine.

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