Only three or four years ago, historians of the Cold War worked without knowing what was in Soviet archives. They relied heavily on Western records, inferring the motivations and goals of Soviet foreign policy. But the Russians and their former Warsaw Pact allies have begun to open their records for research. The Chinese, too, have opened selected materials, especially ones that illuminate the duplicity and depravity of the men in the Kremlin. Regime changes and liberalization in many countries