Say madara wins the war, sasuke and naruto fight.. sasuke wins and then gets killed by madara, lets just imagine for that matter kabuto gets killed for that matter too..
Madara has his moons eye plan complete.
what does zetsu decide to do??
maybe he will stand by madara or go off and live a rich and fulfilled life???
in all seriousness though.
whats gonna happen with white/black zetsu??