The Road to World War II Why Wasn't Hitler Stopped?

World War II began 70 years ago when Germany invaded Poland on Sept. 1, 1939. It would last six years and claim millions of lives. But the Allies missed several opportunities to stop Hitler in the run-up to the war.
Photo Gallery: The World Goes to War
Foto: A0009 dpa/ dpa
Fotostrecke

Photo Gallery: The World Goes to War

Photo Gallery: The World Goes to War
Foto: A0009 dpa/ dpa
Fotostrecke

Photo Gallery: The World Goes to War

Photo Gallery: The World Goes to War
Foto: A0009 dpa/ dpa
Fotostrecke

Photo Gallery: The World Goes to War

Photo Gallery: The World Goes to War
Foto: A0009 dpa/ dpa
Fotostrecke

Photo Gallery: The World Goes to War

Photo Gallery: The World Goes to War
Foto: A0009 dpa/ dpa
Fotostrecke

Photo Gallery: The World Goes to War

Translated from the German by Christopher Sultan.