If you can't talk to him or he wouldn't listen to you, ignore him. He'll get fed up too and ask you why you are ignoring him. Maybe then, would be the best time to tell him and he might even listen.
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.