tensions rose over Berlin. Nor was the series of 48 underground tests launched in the summer of 1964 designed to impress the newly installed premier, Leonid Brezhnev. And the United States would not have conducted a dozen atomic blasts at its Nevada test site in the first half of 1977 -- including the Cove

tensions rose over Berlin. Nor was the series of 48 underground tests launched in the summer of 1964 designed to impress the newly installed premier, Leonid Brezhnev. And the United States would not have conducted a dozen atomic blasts at its Nevada test site in the first half of 1977 -- including the Cove