The usual response is that God moves in mysterious ways, that nobody dies for reals and maybe God wanted to meet your mom, and that if there wasn't anything bad in this world you wouldn't appreciate the good. You can also try the one about how God is good but powerless against Satan who is running around and spreading cancer left and right.
He will rely possibly that is what is projected by SOME christian denomination that according to the bible the God Cursed Adam and Eve and all their decedent Quote " making their lives hard no longer live in a perfect garden man would struggle and sweat for their existence ( implying illness and suffering ) women would have pain in child birth and be ruled by there husbands their lives would be ruined for their sin as per The Christian bible reference site that might help you get a possible understanding of his thought process thank you for the question.
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.