Perhaps the EU, but not the US.
https://edition.cnn.com/2024/03/09/politics/us-prepared-rigorously-potential-russian-nuclear-strike-ukraine/index.html
In late 2022, the US began “preparing rigorously” for Russia potentially striking Ukraine with a nuclear weapon, in what would have been the first nuclear attack in war since the US dropped atomic bombs on Hiroshima and Nagasaki nearly eighty years before, two senior administration officials told CNN.