"The real issue is tribalism. Islam is an excuse. They fought among each other before Islam, and they will continue to do so until the consummation of the world.
The Kurds are Muslims, the Turks are Muslims and the various rival Arab tribes are Muslims, yet they seem to end up fighting each other."
Your right in a certain respect, in that tribalism is a major problem in the world period. It is particularly acute among the practitioners of islam. My theory on that is islam is anti-modern, a primitive religion and that exacerbates the problem between and among the different arabic and ethnic groups that are cult followers of this religion of peace.
The Bedouin tribes have been fighting among themselves for centuries.
It's not Islam that is anti-modern, but rather it's the sect of Islam followed by these brigands.
Sufi Islam, by contrast, is pacifist.