A little walnut oil, slowly rubbed in to keep the wood from drying out. Rosewood will eventually crack over time like teak because it's a very hard wood, no matter what you try to stop it. Any Swedish oil finish product will work or even linseed oil.
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.