The Core Activities of Irregular Warfare

As discussed briefly in the previous post, current US military doctrine describes irregular warfare as having five core activities: counterterrorism (CT), unconventional warfare (UW), foreign internal defense (FID), counterinsurgency (COIN), and stability operations (SO). Rather than being viewed as a list of discrete options, these activities (sometimes called the “five pillars of irregular warfare”), according

Defining Irregular Warfare

“IW is a complex, ‘messy,’ and ambiguous social phenomenon that does not lend itself to clean, neat, concise, or precise definition.”Irregular Warfare Joint Operating Concept, 2008 The above quote reflects the discomfort that the US military had (and continues to have) in coming to terms with an aspect of warfare that was becoming increasingly apparent