👉 The textbook weapon, also known as the "weapon of mass destruction" or "weapon of mass harm," is a term used to describe a type of weapon capable of inflicting catastrophic damage on a large scale, often resulting in significant loss of life and widespread destruction. In military and security contexts, this typically refers to nuclear weapons, which possess the potential to cause immense harm through nuclear explosions, ionizing radiation, and long-term environmental contamination. Other textbook weapons include chemical and biological agents that can cause severe illness or death in large populations, and advanced conventional weapons like hypersonic missiles and high-yield artillery that can deliver devastating blows with precision. The concept of the textbook weapon underscores the critical importance of non-proliferation efforts and international treaties aimed at preventing the spread and use of such devastating technologies.