Instability in Afghanistan has had a considerable effect on regional security in Central Asia, particularly in the aftermath of the events of 9/11, and this has meant that the importance of NATO and its contribution to security in this area has increased considerably. A detailed analysis of this topic is precisely important because it could highlight the areas where the Central Asian countries could increase their security contributions to Afghanistan's security through enhancing their cooperation with NATO. This book presents the fully revised and updated versions of papers presented at the NATO Advanced Research Workshop (ARW), 'NATO, the Fight against International Terrorism in Afghanistan and Security Situation in Central Asia since 9/11', held in Ankara, Turkey, in April 2011. This ARW was supported by the NATO Science for Peace and Security Programme. The book takes a comprehensive approach to the regional security complex in Central Asia by emphasizing the human security, socio-political and energy dimensions in addition to the traditional military dimension of the fight against international terrorism in and around Afghanistan. The findings of the book enhance our understanding of the root causes of international terrorism and the effective ways of coping with the security challenges in this region. The book is divided into five parts: First, NATO's Contribution to Lasting Security in Afghanistan; Second, Responses of the Central Asian States to Political Instability, Organized Crime and International Terrorism in Afghanistan; Third, Energy Security in and around Central Asia; Fourth, International Competition and Co-operation over Afghanistan and Central Asia; and Last but not least, Regional Security Organizations and the Fight against International Terrorism in Afghanistan.