From the war on terrorism to global warming, from national missile defense to unilateral sanctions, the US has been taken to task for coming on too strong - or for doing too little. This volume explores international reactions to US conduct in world affairs. Authors from around the world address the tensions between unilateralism and multilateralism in US foreign policy. Their careful analysis suggests that the US inclination to go it alone may undermine not only long-term international support for US leadership, but also the sustainability of valuable international institutions.