For the most part - especially in today's unfortunate world where most clients are behind NAT firewalls and ISPs that block so many incoming connections - client/server programs such as what you're looking to do will route all traffic through the central server, which is "guaranteed" to be accessible from all clients.
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.