Over the past fifty years, barriers to international trade have decreased substantially. A key source of this decline in protectionism has been the proliferation of agreements among countries to liberalize commerce. In this article, we analyze the domestic political conditions under which states...

The relationship between foreign trade and political conflict has been a persistent source of controversy among scholars of international relations. Existing empirical studies of this topic have focused on the effects of trade flows on conflict, but they have largely ignored the institutional...

Preferential trading arrangements (PTAs) have spread widely over the past fifty years. During the same era, multilateral openness has grown to unprecedented heights, spurred by the General Agreement on Tariffs and Trade (GATT) and its successor, the World Trade Organization (WTO). If the...

The relationship between democratization and war has recently sparked a lively debate. We find that transitions from autocracy that become stalled prior to the establishment of coherent democratic institutions are especially likely to precipitate the onset of war. This tendency is heightened in...

We examine how domestic political factors influence the type of regional integration arrangement (RIA) that states enter. States can pursue at least five types of RIA, in order of their depth of policy integration: preferential trade agreements, free trade areas, customs unions, common markets...