From the "Great Arab Revolt" against Ottoman rule in World War I to the upheavals of the Arab Spring, this text analyzes a century of modern Arab history through the lens of three intertwined notions: the idea of a single Arab nation, the reality of multiple Arab states, and the competition between them over both concrete and symbolic interests. These concepts are presented against the background of Great Power involvement in the region, regional issues such as the Arab-Israeli conflict and the Iran-Iraq war, and the rise of political Islam.