In this thoroughly updated second edition, Derek S. Reveron provides a comprehensive analysis of the shift in US foreign policy from coercive diplomacy to cooperative military engagement. The US military does much more than fight wars; it responds to humanitarian crises and natural disasters, assists advanced militaries to support international peace, and trains and equips almost every military in the world. Rather than intervening directly, the United States can respond to crises by sending weapons, trainers, and advisers to assist other countries in tackling their own security deficits created by subnational, transnational, and regional challengers. By doing so, the United States seeks to promote partnerships and its soft power, strengthen the state sovereignty system, prevent localized violence from escalating into regional crises, and protect its national security by addressing underlying conditions that lead to war. Since coalition warfare is the norm, security cooperation also ensures partners are interoperable with US forces when the US leads international military coalitions. Exporting Security takes into account the Obama administration’s foreign policy, the implications of more assertive foreign policies by Russia and China, and the US military’s role in recent humanitarian crises and nation-building efforts.