Aim of this book, therefore, is to provide to our readers different aspects of weapons of mass destruction, countries that posses such weapons. How its use by non-state actors can create international security problems? International security, also called global security, refers to the amalgamation of measures taken by states and international organizations, such as the United Nations, European Union, and others, to ensure mutual survival and safety. These measures Include military action and diplomatic agreements such as treaties and conventions. International and national security are invariably linked. International security is national security or state security in the global arena. The imperative to monitor, suppress, attack, and ultimately eradicate international terrorist groups seeking to strike the United States, its citizens, its interests, and Its allies is prompting significant changes in the demands placed on the armed forces of the United States. U.S. forces will often be called upon to assist foreign governments that wish to eradicate terrorist groups on their territory but lack the capabilities to do so on their own. In such cases, U.S. forces can strengthen the capabilities and will of host-government forces by providing training and equipment, disrupt terrorist activities, find and capture or kill terrorists, help to alienate terrorists from the populace, gather intelligence about terrorist networks and activities around the world, and protect friendly forces and bases. For selecting material for this book on one of the most complicated and dangerous security issues facing the world, we have incurred indebtedness of international scholars and institutions.