Україна Ukraine

Here's a summary of some of the nuclear threats Russia has made over the past few years:

https://en.wikipedia.org/wiki/Nuclear_risk_during_the_Russian_invasion_of_Ukraine

For example:

Former Russian President Dmitry Medvedev, now deputy chairman of Russia's Security Council, said that some Ukrainian military commanders were considering hitting missile launch sites inside Russia with Western-supplied long-range missiles. ... "What does this mean? It means only one thing – they risk running into the action of paragraph 19 of the fundamentals of Russia's state policy in the field of nuclear deterrence," Medvedev wrote on the Telegram messaging app. "This should be remembered," Medvedev said. Paragraph nineteen of Russia's 2020 nuclear doctrine sets out the conditions under which a Russian president would consider using a nuclear weapo ... Medvedev made specific mention of point "g" of paragraph nineteen which deals with the nuclear response to a conventional weapons attack.

https://www.reuters.com/world/europe/russias-medvedev-warns-nuclear-response-if-ukraine-hits-missile-launch-sites-2024-01-11/

Obviously, the more they keep threatening to use nukes, the less credible these threats become.