One of the most persistent security threats the United States (U.S.) faces today is a range of hostile activities short of open armed conflict. These activities occur in what is often called the “grey zone,” which blurs the distinction between traditional war and peace and includes actions such as manipulating information, deploying hostile cyber activities, and working through proxy forces to achieve various effects.
This report arises from a shared belief that irregular warfare (IW) in the United States Southern Command (USSOUTHCOM) Area of Responsibility (AOR) cannot be fully understood through institutional doctrine alone. For decades, countries in South and Central America have served as strategic partners to the United States. While U.S. doctrine remains the most visible reference point, regional actors have developed their own IW frameworks that are sophisticated, deeply rooted, and often more aligned with their lived experiences.
This report examines the People’s Republic of China’s (PRC) enduring habits and approaches to occupation to develop a PRC “way of occupation” and considers how the PRC might occupy, pacify, and integrate Taiwan after seizing the island—an area largely neglected in wargames and policy analyses that end with invasion.
This subject bibliography is a selection of top resources on Lebanese Hezbollah in Latin America and includes journal articles, reports, books, sections of websites, and videotaped talks. The dates of the material range from 2010 to 2025, encompassing various aspects of the terrorist organization and its criminal activities which include narcotics trafficking and money laundering. The purpose is to provide ready-access resources for the study of Hezbollah and its linkages to allied organizations—both states and non-state actors—in Latin America.
This subject bibliography is a selection of top resources on Wagner Group, and includes journal articles, books, and online discussion groups. The dates of the material range from 2019 to 2025, encompassing Wagner’s origins to its breakup and Russian state replacement strategies. The purpose is to provide ready-access resources for the study of Wagner Group and its successor organization Africa Corps.
This study is the third in a series of volumes in which the Irregular Warfare Center (IWC) explores the commonalities and differences of the conceptualization of irregular warfare across U.S. allied and partner stakeholders in regions important for U.S. national security. This volume focuses on the African region and is based on surveys and semi-structured interviews with five defense thought leaders drawn from across the continent.
This paper explores the ways that states benefit from the activities of non-state actors (NSAs) as tools of irregular warfare (IW), with a particular focus on China and Russia. An examination of the historical relationships between state and non-state actors reveal that while proxies provide many potential advantages to their authoritarian patrons, they also present significant problems. The paper further demonstrates how China and Russia each utilizes a wide range of NSAs in a similarly broad spectrum of irregular warfare activities, including low-level persistent operations designed to erode adversaries’ institutions over time, to much more kinetic operations that directly challenge the territorial integrity of other sovereign states. Implications for how to respond to these activities are discussed.
This report is the second in a series of volumes in which the Irregular Warfare Center (IWC) explores the commonalities and differences of the conceptualization of irregular warfare across U.S. allied and partner stakeholders in regions important for U.S. national security. This volume focuses on the Indo-Pacific region.
This report is the first in a series of volumes in which the Irregular Warfare Center (IWC) explores the commonalities and differences of the conceptualization of irregular warfare across U.S. allies and partners. This initial volume compares and contrasts this conceptualization among five European academic institutions: the Netherlands Defence Academy, the Norwegian Defence Research Establishment, the Swedish Defence University, the European Centre of Excellence for Countering Hybrid Threats, and the Military Academy of Lithuania. Each of these institutions replied to surveys the IWC designed, assessing how these institutions individually conceptualize and teach irregular warfare and related concepts.
Aug 19, 2026 10:00 AM EST
Join IWC researchers Dr. Alicia Ellis and Sarah Shoer for a virtual lecture on their new article, "Agriculture as a Domain of Hybrid Warfare," now published in the current issue of PRISM.
The authors will discuss how agriculture has become a critical front in modern strategic competition, exploring the vulnerabilities in the U.S. food supply chain from cyber threats, economic coercion, and intellectual property theft. Learn about their proposed "Agriculture Security" (AgSec) framework designed to protect this vital national resource.
