Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good look at KGB, but . . .

This book is essential reading for those who want to learn about the strange world of international espionage. Mitrokhin's archives, assuming their authenticity, solve a lot of old puzzles of the Cold War spying game. My greatest reservation about the book concerns Andrew's interpretations of the KGB material. He assumes throughout that the KGB's leaders were a pack of paranoids and that Americans were largely innocent of adverse designs against the USSR. In fact we won't know the whole story of Cold War espionage until we learn more about what remains concealed in the vaults of the U.S. and U.K. security services.