This research thesis is prompted by the North African Revolution of 2011 that toppled President Ben Alirnof Tunisia, Hosni Mubarak of Egypt and Muammar Gaddafi of Libya. Exploring the causes, triggers,rnchronologies and consequences of the North African Revolutions as well as evaluating the response ofrnthe African Union to the North Africa Revolutions in general and the Libyan civil war in particular is therncentral mission of this thesis. Since diplomacy was the pathway followed by the African Union to resolvernthe Libyan civil war, this paper examines the adequacy and efficiency African Union's diplomacy andrnpolitical solutions to the Libyan civil war.rnOne of the major issues which is extensively discussed in this thesis is the relationship between NorthrnAfrica Revolutions and the African Union normative frameworks and instruments governing democracy,rnconstitutionalism and unconstitutional change of government. Solving the puzzle whether Revolutionsrnare legitimate rights of the people under the African union normative and policy frameworks is the cruxrnmatter of this paper. The adequacy and potential of the African Peace and Security Architecture tornrespond to Revolutions is also inspected.rnConcerning the Responses of the African Union to the North Africa Revolution and the Libyan civil war,rnthis paper contends that, even if the support of the African Union to the Revolutions is unequivocallyrnclear, its responses however are slow and weak. Moreover, the African Union was also effectivelyrnignored, marginalized and sidelined by external octors, such as the Western Nations and North AtlanticrnTreaty Organization.rnOn the relationship between the North Africa Revolutions and the African Union normative frameworksrngoverning democracy, constitutionalism and unconstitutional change of government, this thesis is of thernopinion that there exists no inherent contradiction between the two. Revolutions are morally requiredrnand legally permissible under various African Union norms and legal instruments.rnFinally, by taking some basic lessons from the nature and consequences of the North African Revolutions,rnsome recommendatory points are forwarded to the African Union and its member states so as to tacklernthe causes of future Revolutions in Africa. Besides, due to the failures the African Union political solutionsrnto the Libyan crises and the resulting foreign military intervention, some proposals are suggestedrntowards an effective implementation of Article 4(H) of the constitutive act of the African Union whichrnempowered the Union to intervene in a Member State in respect af grave circumstances, namely warrncrimes, genocide and crimes against humanity. Lastly, since the Libyan civil war has exposed not only thernexistence of serious rift between the African Union and Western powers, but also the marginalization ofrnthe African Union by the latter, some practical solutions to advance the principle of "African solutions tornAfrican Problems" are provided sa as to avoid the marginalization of African Union by external actors onrnmatters originally belong to Africa.rnKey Words- Revolution, Democracy, Constitutionalism, Unconstitutional Change af Government