Been at it since 634 AD!
Still no resolution!
And, the Sunni/Shiite feud has nothing to do with Western Civilization - why do we care who is Mohammed’s legitimate successor?
Whoever wins is still an evil thug!
Respectfully:
A.D.: Anno Domini (Latin) = In the Year of Our Lord. That goes before the date.
B.C.: Before Christ. That is English, and goes after the date.
Therefore, it should be, AD 634.