📒 This monograph develops a typology of old and new insurgency forms derived from a comprehensive review of the writings of insurgency theorists along with the inclusion of a number of schema offered by terrorism scholars. The work is unique in that no prior military theoretical efforts have been undertaken to analyze and synthesize the post-Cold War insurgency form writings that have emerged over the last 2 decades. It is apropos that these writings were greatly influenced by Strategic Studies Institute efforts dating back to the early-1990s-initially pioneered by Dr. Steven Metz, our present Director of Research-that have now come full circle with their integration in this work. The monograph contains an introduction, sections on defining insurgency, terrorism as insurgency indications and warnings, review of insurgency typologies, a proposed insurgency typology with legacy, contemporary, emergent and potential forms, and the strategic implications for U.S. defense policy...