CIA is very fond of throwing the Brits (especially the MI6) under the bus when CIA's fingerprints are identified at the scene of a crime.

And that's not even counting the fact that CIA has been in full control of MI6, British military, and the whole UK, really, ever since installing that clown, Boris Johnson, as UK's PM... right after a series of (CIA's, of course) assassinations of some key MI6 members (and, also, their family members).

Brits may have been involved, of course, but a puppet doesn't control what the puppeteer is using it for... meaning to say that the only real nuclear danger Russia will be facing from Europe (when, not if, this shit goes nuclear... as CIA director is already preparing the public for the CIA's false-flag nuking of Kiev) are the "British" (read: U.S.) strategic nuclear weapons stationed in the UK.

Those will definitely have to be wiped out first (carpet-nuking of UK being the safest bet), and long before they receive any orders to launch... which means in the very first minute of any nuke going off anywhere in Europe, regardless of whose nuke it will be (CIA's or Russian).