You need to parent the navigation controller in the tabbar controller instead of vice versa. Or introduce another navigation controller parented on your tabbar controller, and push the new viewcontroller onto that.
You can achieve this by pushing new viewController on tabbar selected viewcontroller. So you can write your launch function like this.
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.