"Vladimir Putin may launch a tactical nuclear weapon in Ukraine if his troops are defeated by President Zelensky's forces, according to the secretary of Kyiv's national security council."
https://www.msn.com/en-gb/news/world/horror-warning-as-putin-could-use-nuclear-weapons-if-he-thinks-hes-losing/ar-BB1omByl
"Oleksandr Lytvynenko, Secretary of the National Security and Defence Council of Ukraine (NSDC), suggests that Russian leader Vladimir Putin may order the use of tactical nuclear weapons if his army faces a "catastrophic defeat" in Ukraine."
https://www.msn.com/en-us/news/world/putin-could-use-nuclear-weapons-in-case-of-catastrophic-defeat-in-ukraine-ukraines-defence-council-secretary/ar-BB1omxXK