Bertrand Russel, later a famous antinuclear protester and leading member of CND, advocated a pre-emptive nuclear strike against the Soviet Union. It was only when the SU developed their own nukes that Russel changed his stance on this; to him it was just a simple matter of game theory.
That is poisonous rubbish, and a horrible libel on a great (and peaceful) man. You are thinking of John von Neumann. Russell had nothing to do with game theory, and abhorred all violence: see his Wikipedia entry which makes it crystal clear that Russell was an active and courageous pacifist as early as 1916.
"During the First World War, Russell was one of the very few people to engage in active pacifist activities, and in 1916, he was dismissed from Trinity College following his conviction under the Defence of the Realm Act.
"He was charged a fine of £100, which he refused to pay, hoping that he would be sent to prison. However, his books were sold at auction to raise the money. The books were bought by friends; he later treasured his copy of the King James Bible that was stamped "Confiscated by Cambridge Police."
"A later conviction for publicly lecturing against inviting the US to enter the war on Britain's side resulted in six months' imprisonment in Brixton prison (see Bertrand Russell's views on society) in 1918".