Its pretty commonly believed to have no assigned value, that is...it is priceless.
Mona Lisa as having the highest insurance value for a painting in history. It was assessed at US$100 million on December 14, 1962, before the painting toured the United States for several months.
Now, its 2010....you can estimate yourself.
For such a famous and historic painting like that, there really can't be an assigned value. It's priceless because it's so famous,and it's part of our history. Though if I had to guess....in the billion or trillion range.
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.