Leonid Brezhnev was leader of the Soviet Union for eighteen years, a term of leadership second only in length to that of Stalin. He presided over the Brezhnev Doctrine, which accelerated the Cold War, and led the Soviet Union through catastrophic foreign policy decisions such as the invasion of Afghanistan. To many in the West, he is responsible for the stagnation (and to some even collapse) of the Soviet Union. But much of this history has been based on the only two English-language biographies (both published before Brezhnev's death and without access to archival sources) and Brezhnev's own astonishingly untrue memoirs – written for propaganda purposes.