Why are you bothering?<quoted text>
The schism between Sunni and Shia was caused by a lack of succession plans - Islam was never intended to be a world religion.
Shia believe in bloodline god divined succession.
Sunni believe in ejected sucession.
Muhammads offspring were weak and sickly and the elected (Sunni) win the day. They killed all the Muhammad offspring they could. Shias still haven't got over it.
Nev is a regular visitor to the Middle Eastern forums and probably knows more about it than you do.