In Denial: Historians, Communism and Espionage, by John Earl Haynes and Harvey Klehr, San Francisco: Encounter Books, 300 pages, $25.95 In 1983 the Indiana University historian Robert F. Byrnes collected essays from 35 experts on the Soviet Union -- the cream of American academia -- in a book titled After Brezhnev. Their conclusion: Any U.S. thought of winning the Cold War was a pipe dream. "The Soviet Union is going to remain a stable state, with a very stable, conservative, immobile government," Byrnes said in an interview, summing up the book. "We don’t see any collapse or weakening of the...