This second edition of Global Security in the Twenty-first Century offers a thoroughly updated and balanced introduction to contemporary security studies. Sean Kay examines the relationship between globalization and international security and places traditional quests for power and national security in the context of the ongoing search for peace. Sean Kay explores a range of security challenges, including fresh analysis of the implications of the global economic crisis and current flashpoints for international security trends. Writing in an engaging style, Kay integrates traditional and emerging challenges in one easily accessible study that gives readers the tools they need to develop a thoughtful and nuanced understanding of global security.