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In this issue: Explaining African ethnic diversity Elliott Green From the Arab Spring to the Chinese Winter: The institutional sources of authoritarian vulnerability and resilience in Egypt, Tunisia, and China Steve Hess Is party type relevant to an explanation of policy congruence? Catchall versus ideological parties in the Portuguese case Ana Maria Belchior and André Freire Explaining the strength of civil society: Evidence from cross-sectional data Stefanie Bailer, Thilo Bodenstein and V. Finn Heinrich The unintended consequences of the Helsinki Final Act: A path emergence theory perspective Ki-Joon Hong Fragile and failed states: Critical perspectives on conceptual hybrids Olivier Nay Abstracts in French and Spanish