Real image or drawing in UIView for movement with touches?

Option (b) is good! Because you don't need to draw circles programetically. Also you can give tags to those image, so that you can find them in UITouch events, and from that in touchMoved event, you'll need to implement logic for draw a line between those two circles.

Well I think that the option a, could be a more complex because you need OPENGL. But you could play more like give the option to the user to get more colors.

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.