No....
If US and Russia have a nuclear exchange ALL of NATO will retaliate against Russia.
No. It mostly depends on the result of the initial exchange. If the USA chooses to live and accept Ru-prefered (but mutually acceptable) peace, and do not retaliate - then France and the UK won't commit suicide, either.
Just the UK alone has 4 nuclear submarines EACH with enough nuclear warheads by themselves to completely destroy China, Russia, India or whatever large nation they need to. 128 nuclear detonations from one submarine alone within minutes of each other is sufficient to sterilize the whole planet....including the entire Middle East.
No. From those four Vanguard submarines only three are nuclear capable, and only one is on duty at any given moment (other two are in the base and are already destroyed by the first Russian strike) in Biscay bay, and have a good chance to be elininated by Russian attacking submarine before even recieving information that the "phoney war" is ended.
But even if survived it has only 30-40 warheads mounted on the pretty unreliable aging missiles (the last two British Triden-II launch tests failed).
But even if survived and launched less than 100 (and may be much more, depends on circumstances) incoming warheads will be intercepted by Moscow's ABD.
But even if survived, launched and not intercepted - 30-40 warheads are definitely not enough to actually "destroy" a well-prepared state.
Do a few days really matter? No one survives a nuclear exchange. No one.
Just a nucleophobic scary tale. A lot of people will survive nuclear exchange.
This is excluding all the ICBMs and Stealth bombers....which at that point we really won't need Stealth Bombers because all communications equipment will be worthless. Any bomber can get past the border handily and release their deadly payloads by dodging the radioactive clouds.
The radiation will spread by means of the jet stream and sterilize the entire planet.
Wow!!! Will they sterilize the entire planet as they (almost one thousand of them) "sterilized" Las Vegas?
And if by some miracle some people survive during the two years of nuclear winter (very doubtful) there will be nothing left on the surface of the planet anywhere anymore anyway. No livestock, no vegetation and no food. Water and water tables will still be contaminated with radiation.
"Nuclear winter" is a stupid environmetalists scary tale. Something like "global anthropogenic warming".
Just surviving the initial blast is a miracle in itself. (Population centers are always a target) but surviving the fallout afterwards is impossible.
No. Both Russians and Americans are rational people. Saving their own people is a priority. And it means that the first strike is a counter-force strike (with further post-attack coerction into peace).
Get a CLUE. No one survives a nuclear exchange....no one. We will be as dead as Mars or Venus.
Really? Even if so (and it is not) - we don't need Earth without Russia.