When this is not the case, either the state is too weak to exercise such a power, or the discontent is disproportional. In either case, it is an issue of "grievance" because it underlines the shortcomings of the state. In the first situation, it lacks legitimacy and means to exercise legitimate power; in the second case, it is unable to offer the basic principles of social security and thus threatens the well being of the society. In either case, the reasons for mutiny and civil wars are related in particular to an attack to the core values of the state, which may include lack of legitimacy, of social vision, of economic methods, or of political will. Regardless of their nature, they represent "grievances" which can be potentially expressed by the society through civil wars. Overall, it can be concluded that the debate "greed -- grievance" may offer in the...

However, at the moment, there is a variety of civil wars and the studies are insufficient to ensure a proper conclusion to this debate. Still, the debate in itself, regardless of its result, strongly contributes to a better understanding and management of civil wars.
References

Ballentine, Karen and Heiko Nitzschke. "Beyond Greed and Grievance: Policy Lessons from Studies in the Political Economy of Armed Conflict." International Peace Academy. 2003

Collier, Paul. Economic Causes of Civil Conflict and their Implications for Policy. Oxford University, 2006

Global Witness. Return of the Blood Diamond. The deadly race to control Zimbabwe's new found diamond wealth. 2010.

Reno, William. Sierra Leone: Warfare in a post state society.

Sambanis, Nicholas. "Using Case Studies to Expand Economic Models of Civil War." Perspectives on Politics. June 2004. Vol 2. No 2.