The course covers significant theories of global security that help to explain the different ways governments, international organizations, and private sector NGOs address the global security challenges facing their roles in the international system. For the purpose of this course, three major theories are featured: realism, liberalism, and Marxism. Other significant theories will be covered, as well, such as why and how nations go to war and how wars end, theories of conflict resolution, and others. Case studies will be utilized to apply these and other theories to real world examples.