Churchill's Bomb - from the author of the Costa award-winning biography The Strangest Man - reveals a new aspect of Winston Churchill's life, so far completely neglected by historians: his relations with his nuclear scientists, and his management of Britain's policy on atomic weapons.

Churchill was the only prominent politician to foresee the nuclear age and he played a leading role in the development of the Bomb during World War II. He became the first British Prime Minister with access to these weapons, and left office following desperate attempts during the Cold War to end the arms race.

Graham Farmelo traces the beginnings of Churchill's association with nuclear weapons to his unlikely friendship with H. G. Wells, who coined the term 'atomic bombs'. In the 1930s, when Ernest Rutherford and his brilliant followers, such as Chadwick and Cockcroft, gave Britain the lead in nuclear research, Churchill wrote several widely read newspaper articles on the huge implications of their work.

British physicists, in 1940, first showed that the Bomb was a practical possibility. But Churchill, closely advised by his favourite scientist, the controversial Frederick Lindemann, allowed leadership to pass to the US, where the Manhattan Project made the Bomb a terrible reality. British physicists played only a minor role in this vast enterprise, while Churchill ignored warnings from the scientist Niels Bohr that the Anglo-American policy would lead to a post-war arms race. After the war, the Americans reneged on personal agreements between Roosevelt and Churchill to share research. Clement Attlee, in a fateful decision, ordered the building of a British Bomb to maintain the country's place among the great powers. Churchill inherited it and ended his political career obsessed with the threat of thermonuclear war.

Churchill's Bomb is an original and controversial book, full of political and scientific personalities and intrigues, which reveals a little-known side of Britain's great war-leader.