Drawing on newly declassified files, this is the story of how a book forbidden in the Soviet Union became a secret CIA weapon in the ideological battle between East and West. In May 1956, an Italian publishing scout paid a visit to Russia's greatest living poet, Boris Pasternak. He left carrying the manuscript of Pasternak's first and only novel, entrusted to him with these words: "This is Doctor Zhivago. May it make its way around the world." Pasternak...