World War II
From Liberpedia
- https://www.historyplace.com/worldwar2/triumph/tr-austria.htm "When news of the invasion reached Britain and France, they reacted just as they had when Hitler occupied the Rhineland a few years earlier. They did nothing. "
https://en.wikipedia.org/wiki/German_nuclear_weapons_program
https://www.bbc.co.uk/history/worldwars/wwtwo/nuclear_01.shtml