2 Dec. New York Times - Profusion of Rebel Groups Helps Them Survive.

Here is a small sampling of the insurgent groups that have claimed responsibility for attacks on Americans and Iraqis in the last few months:

Supporters of the Sunni People. The Men's Faith Brigade. The Islamic Anger. Al Baraa bin Malik Suicide Brigade. The Tawid Lions of Abdullah ibn al Zobeir. While some of them, like the Suicide Brigade, claim an affiliation with Al Qaeda in Mesopotamia and Al Qaeda claims them, others say they have acted alone or under the guidance of another group.

While on Wednesday President Bush promised nothing less than "complete victory" over the Iraqi insurgency, the apparent proliferation of militant groups offers perhaps the best explanation as to why the insurgency has been so hard to destroy...