Well the best way is to not put them online. Once they are online, even if it's just streaming audio, people will be able to get it. So if you don't want it leaked, you have to keep them off the internet.
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.