Crossing Borders: International Studies for the 21st Century provides a framework to help students understand world issues, built upon an understanding of the many borders that define the international system. In the Fifth Edition, renowned authors Harry I. Chernotsky and Heidi H. Hobbs are joined by new coauthors Brenda M. Kauffman and Sasha Allgayer to address many of the different fields that constitute international studies—geography, politics...