War between the US and Russia would very quickly result in the death of every American and every Russian, as well as 99.999% of the human race. Nobody is that stupid. So this is all bluff, on both sides.

Actually, war between the UK and Russia would have the same result.
War between France and Russia would have the same result.
War between Israel and Russia would have the same result.
War between India and Russia would have the same result.
War between Pakistan and Russia would have the same result.

Nuclear war between any two countries would have the same result.


Educating anyone benefits everyone.