The fate of Raoul Wallenberg, the Swedish diplomat, long revered for single-handedly saving thousands of Hungarian Jews from the Nazi gas chambers, has never been resolved. The Russians snatched him in Budapest in 1945 after he had been issuing passports for Jews to escape the Holocaust. Thereafter, he disappeared. Later the Soviets claimed he had died of heart failure in prison in 1947, aged 34. This summer, light was shed onthe heroic Swedish diplomat’s end in the diaries of the first KGB head Ivan Serov discovered by chance by his granddaughter hidden in the walls of a dacha in northwestern Moscow. He wrote: “I have no doubts that Wallenberg was liquidated in 1947,” on the orders of Stalin.