All- some more to chew on. This came from Dr. Sambanis at Yale who is also a leading civil war scholar who has worked with Drs. Collier and Hoeffler on multiple projects. He wrote "A reasonable way to distinguish between civil war and insurgency is to think of insurgency as a strategy that can be used in a civil war and civil war can be the term that describes a conflict that engages the majority of the population (by contrast, an insurgency might be a strategy pursued by a small group with relatively low levels of public support). As you know, there is no consensus on the definition of these concepts, but a distinction such as the one I suggest might help you support your claim that different interventions/policies can be effective in countering insurgency vs. civil war."
Anyone with more thoughts?