The Battle of Britain Was The First Defeat For The German Luftwaffe.

[Kongo-Otto]

Originally Posted by IamNotDavid

Sorry, that is absurd. Despots never ever kill all their enemies.

History has proven that you don't have to kill all of your opponents.
It's about establishing a climate of fear and distrust against anybody even your own familymembers.
There are pretty much examples in history like Stalin, Mao, Pol Pot, Hitler.