THERE were many reasons why Yuri Nosenko found himself, in June 1962, sitting in an overstuffed armchair in a fussily furnished CIA flat in Geneva, with a glass of American whiskey in one hand and an American cigarette in the other, offering to sell “two pieces of information”. He suggested several of them himself. A prostitute had robbed him of his $250 spending allowance as a member of the Soviet disarmament