Shiites and Sunni have been at war for the past fourteen hundred years, but for the last fifteen years the United States (motivated by oil interest) has inserted itself into the fray; and in the process destabilized the entire Middle East.
CBS Sunday Morning gave a quick overview of the religious/ geopolitical factions involved and the crazy alliances the US has committed itself.
This is a Religious Civil War that needs to happen; but we cannot extract ourselves, because our commitment is not to one side or the other - but to oil.
It doesn't have to make sense: it is Religion. '
the Ol'Buzzard