“Von Neumann’s remarkable foresight is evident in letters he wrote to Ortvay between 1928 and 1939. ‘There will be a war in Europe in the next decade,’ he told the Hungarian physicist in 1935, further predicting that America would enter the war ‘if England is in trouble’. He feared that during that war, European Jews would suffer a genocide as the Armenians had under the Ottoman Empire. In 1940, he predicted that Britain would be able to hold a German invasion at bay (far from obvious at the time), and that America would join the war the following year (as it did after the bombing of Pearl Harbor).”