A test.

Here is an excerpt from George Will's column for today:

Today there are many fewer Iraqis than there were three years ago. This is not just, or even primarily, because so many Iraqis, especially from the mobile middle class, have fled the country, taking with them the human capital -- skills, attitudes, mores -- requisite for a successful society. Rather, many -- and more every day -- of those who remain in Iraq no longer think of themselves as Iraqis. It is too dangerous to identify with the nation.

Can you think of another reason, possibly even the primary one, why there are now fewer Iraqis than there were three years ago?