We quite literally don’t know that at all, nuclear weapons haven’t been used since the US bombed Japan. The threat is ever present but whether anyone is deranged enough to act on nuclear brinkmanship is up in the air.

E.h. Carr wrote a pretty extensive history of the revolution you might be interested in. Also his “What is History?” book, which is really a written collection of lectures, is phenomenal and a great read for any Marxist.

Every insanely hot summer over the last 5 years has been compared to the summer of 76, almost like 5 years of extreme heat is different to 1.