Researchers examined past U.S. countering violent extremism and terrorism prevention efforts and explored policy options to strengthen terrorism prevention in the future. This document summarizes findings from the main report, including that current terrorism prevention capabilities are relatively limited and that there is a need for federal efforts to help strengthen local capacity. However, any federal efforts will need to build community trust to be successful.

The authors analyze the prospect that Iran will further invest in Yemen's Houthis and develop them into an enduring proxy group. The authors examine the history, current relations and trajectory, and possible future of the Houthi-Iran relationship.

Researchers developed the Racist and Violent Extremist Flock (RVE-Flock) tool to explore and analyze textual content on racially and ethnically motivated violent extremist-affiliated social media. This guide explains the tool's functionality.

The authors present a methodology to determine optimal personnel capacity for Marine Corps intermediate-level supply accounts and other measures to help these accounts work more effectively and efficiently to meet supported units' needs.

The Freely Associated States--the Marshall Islands, Micronesia, and Palau--have been the subject of increasing Chinese influence. The authors examine the implications of these activities for defense and foreign policy interests of the United States.

The U.S. Department of Homeland Security (DHS) has changed and expanded its efforts in violence prevention in the past five years. DHS asked the Homeland Security Operational Analysis Center (HSOAC) to examine the change in efforts by the Center for Prevention Programs and Partnerships (CP3) and its predecessor organizations in preventing terrorism and other violence and explore options for CP3 moving forward. In the United States, the full potential value of countering violent extremism (CVE) has never been realized because of key disconnects between the intent of CVE programs and the realities of their implementation. Although it might not have been the intent, efforts singled out and stigmatized American Muslim communities. The disconnect between stated intention and reality stimulated potent opposition to CVE as a concept. In response, the federal government decided to make significant changes in its approaches in this policy area. In late 2021, DHS asked HSOAC to examine and characterize the changes that had been made, providing an outside viewpoint on the extent of change and how those changes had responded to the concerns about CVE efforts. This report documents the researchers' approach, findings, and recommendations.

The authors examined the reasons behind the inertia of the U.S. policy objective in Afghanistan through interviews with the senior leaders involved in policy deliberations between 2001 and 2016.