Unilateral Versus Multilateral International Sanctions: A Public Choice Perspective

Multilateral economic sanctions can be expected to impose greater terms-of-trade effects on a target nation than unilateral sanctions. Yet despite their potential for greater economic damage, multilateral sanctions often are less effective in bringing about desired political results in the target. An interest-group model of endogenous policy suggests that multilateral sanctions can undermine the political effectiveness of opposition groups in the target country, or strengthen those groups supporting the objectionable policy of the ruling regime. Such perverse effects are due in part to the inability of multilateral coalitions to enforce cooperation among members, and to the appropriation of sanctions rents in the target country. Unilateral sanctions, however, imposed by a country with close ties to the target, are often effective in achieving their intended political objectives.