Here's a snip from Bill Blum's article linked below, a good read.
Oh Those Quaint Tribal Customs
On December 7, the All Things Considered feature of National Public Radio had a report about the "honor" killing of a young woman in Iraq who had been kidnapped. She had to be killed by her family because of the mere possibility of her having been raped by her captors; the family had to protect its honor; a much loved and admired daughter she was, but still, her cousin shot her dead. It had nothing to do with Islam, the story said, it was a "tribal custom."
This report was followed immediately by Col. Gary Anderson, US Marines retired, arguing that the United States has to stay the course in Iraq. He's concerned that bin Laden et al. will think the United States is "a quitter." He says that leaving now would "dishonor" the Iraqis and he's apparently prepared to continue killing any number of the very same Iraqi people to preserve their honor. Anthropologists report that this seems to be some kind of "tribal custom" in Anderson's country.
Presumably it doesn't bother the good colonel that a large majority of the informed people of the world think the United States is a murderous imperialist power -- he's probably proud of that -- but a "quitter"? Over his dead body. Or someone's dead body.
http://www.dissidentvoice.org/Jan06/Blum10.htm