This book provides a comprehensive exploration of hypersonic technology, focusing on its growing significance in modern warfare. It is structured into five parts, each addressing a different aspect of hypersonic weapons. Part I lays the foundation, explaining the definition, types, and characteristics of hypersonic weapons, such as glide vehicles and cruise missiles. It covers the physics of hypersonic flight, the challenges posed by extreme speeds, and the materials needed to withstand such conditions. A detailed analysis of propulsion systems like scramjets and ramjets highlights future innovations in this field. In Part II, the book delves into the development and testing of hypersonic weapons. It explores their evolution, from Cold War-era experiments to modern programs led by the U.S., Russia, and China. Testing facilities and challenges associated with high-speed flight, such as wind tunnels and simulation tools, are discussed in depth. Part III addresses the military and strategic implications of hypersonic weapons. It emphasizes their offensive capabilities, the difficulty of defending against them, and their role in global power dynamics. The global arms race is examined, with a focus on how hypersonic weapons fit into national defence strategies, and the delicate balance between conventional and nuclear systems is considered. Part IV outlines the technical challenges and countermeasures to hypersonic weapons, including detection and interception difficulties. International collaboration on missile defence and the ethical and legal concerns surrounding these weapons are also explored. Finally, Part V looks to the future, discussing emerging technologies, the potential for space-based hypersonic platforms, and the changing nature of warfare in a hypersonic age. The book concludes with insights into the future challenges and opportunities presented by hypersonic weapons in global security.