The link is to an OP-Ed that Steven Pressfield wrote. He is the author of several popular novels, one you are probably most familiar with is "Gates of Fire."
The essay describes middle eastern tribalism and how it pertains to the current war. Other essays he's written are also available on his website. This essay is in line with the essay Peregrino posted by Col. Hunt.
http://www.stevenpressfield.com/content/op-ed1.asp