Here we see why Thomas Powers is a Pulitzer class writer. This is an excellent investigation of a very charged, complex but immensly interesting topic and the tragic life of maybe one of the brightest men in history of science. Powers takes us through the golden years of physics, birth of quantum mechanics, key figures surrounding this unique period, the international brotherhood and the total darkness and bitterness that shattered it in the wake of WWII. Having grown up in the aftermath of the Great War, Heisenberg, the smartest pupil of the "Great Dane", Niels Bohr, finds himself suddenly on the "other" side again in 1939. In spite of the fact that he never joins the Nazi party, an arrogance that he can afford due to his immmense popularity and fame, he was still considered to be a very dangerous tool of Hitler's ambitions by almost all of his old freinds. There was good reason to fear, for he had the means and the knowledge to put fission into the service of his country for peaceful and non-peaceful purposes. Worst of all, he had refused to jump ship and leave Germany, his country, at the beginning of hostilities. Powers goes into great detail of so called the German Atomic Bomb project, which turns out to be non-existent. Heisenberg cleverly plays the establishment to put war in the service of physics not the other way around as he puts it. Incredibly detailed and solid research Powers has done supports this view of Heisenberg's war activities. His detractors, old friends, many of them jews who have lost family in concentration camps, hold the view that Heisenberg was asked by Hitler to build a bomb but he simply did not know how to do it. The subject is very rich, full of giants of science and world history, characters small and large who cross from physics, math, chemistry, to military to politics and sometimes to very personal levels but all played out in a global theater. Thomas Powers shows that it is possible to write decent history even from a victor's point of view. It is worth noting the recent Broadway play by Michael Frayn, Copenhagen, which was motivated by this very book. The play is daring but still captures only a fraction of the real drama chronicled in the book. "Heisenberg's War" is well written. One gets a good feel of the time period. Very important Farm Hall records have been finally included which was missing from Cassidy's biography. It may have too much detail for casual reader but a gold mine for the interested. The irony of the men, who actually built the bombs and dropped them on non-combatant populations, refusing to shake hands with Heisenberg, who contributed absolutley nothing to the Nazi war effort, is just overwhelming. It is even more ironic that Heisenberg himself witnessed the total destruction of his homeland by the indiscriminant and incessant Allied carpet bombings. Imagine the fear his intelligence and understanding of nuclear physics caused on the Allied side at the time, when a quasi-attempt was made on his life while he lectured in neutral Switzerland. Like all greats, Heisenberg also had an ego to match his intellect. After a failed attempt or two, he removed himself from the position of having to "explain" himself and kept his silence, only deepening the mystery surrounding himself and the German "Bomb" project. "But the price of silence was steep. It buried by common consent the question all should have tried to answer: what should a man do when asked to build an atomic bomb?"