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Ryan K. Beasley, Juliet Kaarbo, Explaining Extremity in the Foreign Policies of Parliamentary Democracies, International Studies Quarterly, Volume 58, Issue 4, December 2014, Pages 729–740, https://doi.org/10.1111/isqu.12164
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Abstract
Why do multiparty cabinets in parliamentary democracies produce more extreme foreign policies than single-party cabinets? Our paper argues that particular institutional and psychological dynamics explain this difference. We test this argument using a global events data set incorporating foreign policy behaviors of numerous multiparty and single-party governments. We find that more parties and weak parliaments promote extremity in coalitions, but parliamentary strength has the opposite effect for single-party governments. This study challenges existing expectations about the impact of democratic institutions on foreign policy.