Has NATO recently threatened to nuke Russia?
statements made by some high-ranking representatives of the leading NATO countries on the possibility and admissibility of using weapons of mass destruction – nuclear weapons – against Russia.
I've looked for such statements (mostly on pro-Russian sites) and haven't found any obvious candidates.
Sites I've checked include: kremlin.ru, washington.mid.ru, rusemb.org.uk, tass.com, ria.ru, rt.com, russia-insider.com, sputniknews.com, wsws.org, journal-neo.org, schillerinstitute.com, consortiumnews.com, thegrayzone.com, strategic-culture.org, globalresearch.ca, thesaker.is. My main search term was "russia nuclear" (without quotation marks).