The novels of Harry Turtledove show history balancing on single moments: One act of folly. One poor decision. One moment of rage. In this astounding new series, the unthinkable has come to pass. The Cold War turns hot--and the United States and the Soviet Union unleash their nuclear arsenals upon each other. Millions die. Millions more are displaced. Germans battle side by side with Americans, Polish freedom fighters next to Russian fascists. The genie is out of the bottle. And there's no telling what...