摘要: This study aims to explain the pattern of contributions NATO’s military campaign in Libya. It combines collective action theory with hypotheses on balance threat, alliance politics, and domestic constraints a multicausal framework, which is tested qualitative comparative analysis. The results suggest novel inferences interactions between partisan benefits states wish secure by contributing multilateral operation. Contrary conventional wisdom, parties situated at left ideological spectrum were more inclined support Operation Unified Protector than right. Whereas left-wing governments participated if they had resources contribute significantly fulfillment protection mandate either highly valued their United States or not facing imminent elections, right-wing only contributed countries’ interests threatened crisis Libya participat...