Perennial al-Shabaab: A Case for International Intervention Against Domestic Failures

 

al-Shabaab fighters outside of Somalia. Source: sahistory.org.

About the author:

Sam Hanson is a certified intelligence analyst and a student of International Relations and Economics at Pitzer College (United States). His research interests include intelligence commonization, international security, East Asian geopolitical relations, cross-border terrorism, and astropolitics. Hanson is currently a fellow at the Keck Center for International and Strategic Studies and also holds a position as course advisor at ALCON Intelligence Ltd.

BLUF

·        al-Shabaab's entrenchment in Somalia persists due to a convergence of ideological absolutism, state fragility, and transnational network support that no unilateral domestic solution can adequately address. 

·           An unexplored but viable path forward lies in formally classifying the group's conduct as Crimes Against Humanity under the Rome Statute, leveraging the precedent of the Special Court of Sierra Leone to strip al-Shabaab of ideological legitimacy and extend legal accountability beyond Somalia's borders.

Introduction 

Despite a relative lull in high-profile attacks since the early 2020s, al-Shabaab has not dissolved, demobilized, or been meaningfully moderated in its objectives by the Somali president’s 2022 declaration of “total war” or by coalition counterterrorism efforts. The number of casualties attributed to al-Shabaab grew by 74% from 2024 to 2020, and since January 2025 the group recaptured strategic areas in central Somalia that had previously been held by security forces, relinking territorial concentrations in South and mid regions. The agency of al-Shabaab in Somalia has been nothing short of perennial. 

 

This is not an outright criticism; attempting to impede the operations of al-Shabaab with only  domestically available resources is comparable to trying to win a chess match with half the board missing. The Somali central government’s chronic institutional fragility, the group’s ideological absolutism rooted in religious nationalism, and the broader network of Islamic State affiliates that sustains al-Shabaab across the Horn of Africa create a structural persistence that would be difficult to address for any domestic actor unilaterally, let alone one facing a multitude of adjacent issues. 

 

As is the case, a viable policy pathway requires moving beyond internal political solutions. One such pathway is through international humanitarian law. The formal classification of al-Shabaab’s actions as internationally wrongful acts under the UN Rome Statute for Crimes Against Humanity (CAH) is one such path which plays to the strengths of global governance by routing the issue through the arena of humanitarian crime. Prior to the realization of the ILC articles, this same mechanism was successful in prosecuting serious international humanitarian criminals during and after the Sierra Leone Civil War in the Special Court of Sierra Leone. Before arriving at that recommendation, however, it is necessary to assess why alternative frameworks drawn from regional precedent ultimately fall short. 

The Structural Constraints on Direct Domestic Resolution

Let us first acknowledge what it means to negotiate with a jihadist terrorist organization. Al-Shabaab’s ideological foundation is religious nationalism, a strategic framework that contextualizes its goals and violence as sacred imperatives. The contextualization of these imperatives as worthy of jihad leads to a certain strategic absolutism, where any non-absolutist resolution is neglected. This can be observed not just in the actions of al-Shabaab, but in the actions of terrorist cells worldwide.

 

A disregard for relative solutions makes the prospect of negotiation with al-Shabaab, as with any organization which relies on terrorism, very troublesome, and from this it can be derived that the group has no capacity to alter their goals or beliefs in any shape or form. In practical terms, any diplomatic intervention that requires the group to recognize the authority of a non-Islamic governing body will be seen as a concession. The consequences of this for policymakers are significant: standard conflict-resolution tools like ceasefire negotiations, power-sharing agreements, and amnesty frameworks have no real agency against an actor to whom political compromise is in most cases impermissible.

 

This strategic rigidity is compounded by the weakness of the Somali central government, which has struggled to maintain coherent authority even in the aftermath of the 2022 presidential election. It is clear that Somalia’s government is not yet capable of addressing the issue of al-Shabaab domestically, and without stable institutions capable of enforcing agreements and commanding public legitimacy, any solution which depends on bilateral domestic cooperation is not only strategically illegitimate but unreliable in its governmental responsibilities.

Why Regional Assimilation Precedents Also Fall Short

Regional assimilation solutions have been another frequent proposal in the conversation of al-Shabaab and Somalia. Though they have found relative success in the past, like in the 2005 Comprehensive Peace Agreement (CPA) between Sudan and the Sudan People’s Liberation Army, regional assimilation often fails to produce a plan that takes into account evolutionary circumstances. The 2005 Comprehensive Peace Agreement (CPA) between Sudan and the Sudan People’s Liberation Army achieved a formal division of political power and oil revenues by producing a partial decentralization of Islamic governance in the North. After initial declarations of success, the agreement’s half life proved to be short. 

 

Economic conflict over control of the Greater Nile Pipeline persisted well into the 2010s, and internal violence in South Sudan killed over 400,000 people in the five years following the CPA’s implementation. The agreement did not prevent governmental collapse in South Sudan either, in fact it arguably accelerated it by creating a sovereign state without the institutional infrastructure to sustain itself. Applying a similar framework to Somalia would risk replicating these failures at an even larger scale. Moreover, the CPA model required a negotiating partner willing to accept partial secularization of state governance. Al-Shabaab, whose entire political identity is constructed around religious absolutism, is not that partner.

 

A similar regional case in the transformation of the Iraqi Sadrist movement is more analytically interesting but equally limited in long-term applicability. Following the 2003 U.S. invasion, Muqtada al-Sadr leveraged the resulting power vacuum to build a mass religious following and an armed militia that fought coalition forces in 2004. A ceasefire brokered by Grand Ayatollah Ali al-Sistani produced a formal pause, but al-Sadr’s forces dissolved into increasingly autonomous and violent factions. By 2007, sustained military pressure from these groups led al-Sadr to disband his militia and reconstitute his movement as a formal political organization. The result was an effective desacralization of his platform.

 

By entering electoral politics, the Sadrist movement accepted the constraints of democratic governance which limited its capacity to operate under ideological absolutism. This forced transformation would be potentially viable in Somalia if al-Shabaab could be persuaded to exchange armed insurgency for a formalized political presence; desacralization might reduce immediate violence and create conditions for electoral accountability. 

 

However, this is an unlikely outcome, and the obstacles to such a pathway are formidable. Even amidst the chaos of the invasion, Al-Sadr operated within an Iraq state that had a functioning legal architecture imposed by coalition forces and secured by well-respected Iraqi religious authorities. Somalia has no equivalent of this at present. Moreover, al-Shabaab’s history of atrocities against the Somali civilian population (targeted assassinations of community leaders, bombings in residential areas, forced recruitment, etc.) is bound to make any formalized political integration deeply unpopular with the Somali commonwealth. Therefore the granting of political legitimacy through negotiation or concession will not succeed in stamping unrest until those who have been directly affected by al-Shabaab attacks feel accountability is reached. This is something that the Somali central government nor any regional agreement can achieve. Much to that end, establishing legal accountability through international humanitarian law could be the substitute that allows for a long-term solution to finally come forward.

The Case for Legal Classification through International Law

Given the limitations of domestic and regional precedents, the most viable policy pathway is one that utilizes top-down authority, starting with the formal classification of al-Shabaab’s conduct as internationally wrongful acts under United Nations statutes. Classification of a political actor’s actions as internationally wrongful acts under UN frameworks introduces practically implementable consequences by creating a distinct legal circumstance in which member states are authorized to use collective force against a designated actor, and in which foreign governments supporting or harboring the group’s affiliates may be legally held responsible for those associations.

 

The Special Court of Sierra Leone (SCSL) serves as a critical precedent to this case. In the aftermath of the Sierra Leone Civil War, the SCSL successfully prosecuted twenty-three individuals for acts of terrorism which were formally designated as war crimes under UN statutes. Since then the political environment in Sierra Leone has become progressively more stable, and the court played a monumental part in achieving this outcome. It has since been retired and replaced by the Residual Special Court of Sierra Leone (RSCSL) to manage ad hoc operations. 

 

The court demonstrated that de facto international criminal jurisdiction over non-state terrorist actors is legally achievable and sustainable. It also demonstrated something very important from an intelligence perspective: that legal accountability, when publicly executed through a legitimate international mechanism, delegitimizes extremist ideology among both domestic supporters and foreign sympathizers. In other words, the public conviction of armed actors fighting under a religious or nationalist absolutism reduces the ideological credibility of that absolutism.

 

Applying this framework to al-Shabaab requires evaluating to what extent the group’s conduct meets the threshold of Crimes Against Humanity (CAH) under the Rome Statute and UN Charter provisions. This is not a difficult condition to satisfy. Al-Shabaab’s actions which could pass the CAH rubicon are well-documented and valid across multiple criteria. Acknowledging then that the evidentiary record is substantial, the SCSL provides a well-equipped model for how such a tribunal could be constructed, meaning minimal adjustments would be necessary to begin the process.

 

Some will object to this course of action on the basis that the United Nations has failed to persecute numerous political actors indicted under the Rome Statute. While this is true, it is also true that in the majority of these cases the indictees were protected by the externally recognized sovereignty of their state. al-Shabaab only maintains internal sovereignty through a monopolization of violence, in which cases persecution has a much higher rate of success.

 

The Rome Statute framework also addresses al-Shabaab’s broader network. Since formally affiliating with the Islamic State in 2012, al-Shabaab has operated within a transnational support structure whose sympathizers and secondary actors are distributed across multiple jurisdictions. The “international wrongful act” classification is the only existing policy decision that extends legal exposure to those foreign governments and non-state actors that provide material support to the group. This in turn creates accountability pressure that operates beyond Somalia’s borders and is not subject to sovereignty constraints. 

 

This is the part of an international intervention solution which is inaccessible from more horizontal angles. The deadly Westgate mall attack in Kenya in 2013, for example, was not carried out by al-Shabaab proper, but by al-Hijra, a terrorist cell in Kenya sympathetic to al-Shabaab and also active in Somalia. Borders should never be part of the calculation when dealing with terrorist groups. Cooperation is absolutely essential. Counterterrorism efforts that focus exclusively on the group’s Somali operational footprint will always be outpaced by adjacent developments. 

Policy Implications and Recommendations

The comparative framework developed above yields a sequenced set of actionable recommendations for intelligence and policy analysts to take into consideration.

 

First, the UNSC Counter-Terrorism Committee should advance a formal UN resolution classifying al-Shabaab’s documented actions as internationally wrongful acts and Crimes Against Humanity under the Rome Statute. This step does not require the approval of the Somali central government. It can and should be led by a coalition of member states with sufficient documented evidence portfolios. Intelligence agencies and NGOs involved on the issue should prioritize building and sharing the evidentiary record needed to support this classification, coordinating with AFRICOM and allied partners operating in the Horn of Africa.

 

Second, international classification should be paired with a targeted effort to strengthen the Somali government’s institutional capacity. Waiting for Somalia to achieve governmental stability before pursuing legal accountability is counterproductive to the sequence of the framework. International legal pressure reduces al-Shabaab’s operational freedom and delegitimizes its ideology; this reduction in threat creates space for institutional development, not the other way around. Capacity-building programs in rule of law, judicial infrastructure, and civil security should be designed to operate in this reduced-threat environment.

 

Third, the long-term desacralization pathway suggested by the Sadrist precedent should be kept in view as a second-stage objective. If international legal action succeeds in degrading al-Shabaab’s military capacity and ideological authority, a subset of the group’s political constituency may become amenable to non-violent political participation. Analysts should monitor internal factional dynamics within al-Shabaab for indicators of this shift—particularly any signals of disagreement between the group’s military leadership and its broader support base over the cost-benefit calculus of continued armed insurgency.

 

The broader lesson of this analysis is one that intelligence practitioners will recognize: threat actor resilience is rarely a function of a single variable. Al-Shabaab endures because it operates at the intersection of ideological absolutism, state fragility, and transnational network support—three reinforcing conditions, each of which must be addressed through a different instrument. No unilateral domestic solution is sufficient. International classification under UN statutes, backed by a coalition of member states and grounded in the evidentiary precedent of the Special Court of Sierra Leone, is the mechanism most capable of disrupting all three simultaneously.