Another dynamic is at play in the region besides the Sunni-Shia divide. It is that between the forces of centralization and the forces of decentralization. As a rule, the U.S. sides with the former; the Arab people with whom we meddle generally side with the latter. Given the tribal, familial focus of their societies; Arabs are unlikely to abandon their particularism in favor of American statism.
"Ask Bush Why The Iraqi Military Won't Fight," The Unz Review, May 29, 2015.