Because Jesus is the one who casts Satan from Heaven, down to the vicinity of the earth, after God gives him authority in Heaven as king of the Kingdom. Since Jesus is the one who spoke about Satan being fallen and Jesus had not yet returned to Heaven, then it stands to reason that Satan was still residing in Heaven when Jesus spoke those words.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.