Nagasaki

Nagasaki is the capital and the largest city of Nagasaki Prefecture in Japan. In 1945, it became the second city in the world to be destroyed by an atomic bomb, an event which ended World War II.

Nagasaki in The Man With the Iron Heart
The United States' decision to destroy Nagasaki and Hiroshima with an atomic bomb crushed Reinhard Heydrich's hope that Japan's ongoing war against the US would drain America's resources enough to weaken its occupation of Germany.