The Crime–Terror Nexus
Authors: Petrich Katharine 
Published: March 2021

The crime–terror nexus is the convergence of two types of disruptive nonstate group activities, crime and terrorism. The phrase can also be used to refer to cooperation between criminal and terrorist groups. When conceptualizing the crime–terror nexus, it’s helpful to categorize relationships in three ways. To achieve nexus status, groups either collaborate, combine, or convert. The most common presentation of nexus (or hybrid) groups is terrorist “conversion,” when a purely terrorist organization transitions into a more diversified model, rather than criminal groups moving toward political violence (though there are some notable exceptions) or two groups of different types “joining forces.”

Responses to the crime–terror nexus have been uneven. Organized crime and terrorism research have traditionally been siloed from each other, with academics, policymakers, and law enforcement specializing in one or the other—an artificial divide that has become particularly problematic given the modern interconnectedness of political and economic systems wrought by globalization. Traditional security thinking is biased against crime–terror convergence because it emphasizes the difference in motivation between criminal and terrorist groups. Adherents have argued that any such relationships would be transactional and short-lived because criminal groups are interested in remaining out of the public eye, while terrorist groups are explicitly interested in drawing attention to themselves.

However, this perspective misses both the potential benefits of diversified activities for violent nonstate groups, and the idea that groups can pursue a range of goals simultaneously across different levels of the organization. Notable exceptions to this institutional siloing include “deep web” and “dark networks” research, which have identified criminal–extremist relationships as relying on similar infrastructure and thus persisting over a longer time span. Both law enforcement and researchers should take their cue from this wholistic orientation. Siloing crime and terrorism from one another presents operational problems: while these groups and their activities may move easily between criminal and political violence, states often separate their law enforcement from their military and domestic security agencies, creating bureaucratic hurdles for effective disruption of hybrid groups.

A small cadre of researchers, however, have begun to rectify these artificial disciplinary boundaries. Recent literature on the crime–terror nexus can be broadly categorized into four major buckets: the causes and enabling conditions that allow for such interactions, the spectrum of possible relationships, the ways that groups change as they move into the other’s area of operation, and the policy implications for melded groups. Drawing on work across criminology, sociology, political economy, history, and organizational behavior, in addition to political science, we can more effectively map and understand the contours of the crime–terror nexus.

Criminally diversified terrorist groups are a distinct security threat because they are more adaptable, resilient, and entrenched than their traditionally resourced counterparts. Further, criminal activity may alter a group’s long-term political goals, making negotiated settlements and demobilization agreements more challenging. By including the crime–terror nexus in assessments, both academics and policymakers can make more accurate assessments of the contours of low-intensity and asymmetric warfare, leading to better policy outcomes, durable institution building, and increased protections for populations impacted by violent nonstate actors.