Earlier quoted context omitted.
They were on Japan and plenty of people pushed for a preemptive strike on the USSR. "John von Neumann" was a very famous and influential person defending just that.
Smart guy, von Neumann. We should've listened to him.
Plus all that nonsense on replicators/celular automata in later life.
Not worthy of the hype as far as I'm concerned.
A world with only the USA would have been far worse.