Is cold war really a 20th century invention? Posturing and proxy wars were going on forever between the then-superpowers, they just didn't have nuclear ICBMs.

Is cold war really a 20th century invention? Posturing and proxy wars were going on forever between the then-superpowers, they just didn't have nuclear ICBMs. Unless somehow weapons get less effective with time, or we reenter a unipolar world, I should imagine cold war of varying intensity is the Nash equilibrium for all time to come. Better get used to it.