The Houthis as Instruments of Maritime Disruption
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Maritime chokepoints linked to the conflict between Iran, the United States, and Israel in the Arabian Gulf and the Red Sea are witnessing a shift in the nature of confrontation. Despite the military character of the conflict, the management of the battle increasingly relies on indirect tools to achieve strategic objectives. In this context, maritime corridors—most notably the Bab al-Mandab Strait—have emerged as alternative arenas for managing the confrontation. The issue is no longer control over territory, but rather influence over the flow of trade and energy.
Within this framework, the Houthis act as an operational intermediary. They do not function as a fully independent actor, but rather as part of a broader network linked to Iranian calculations in the Red Sea. Their geographic position and military capabilities grant them the ability to affect one of the world’s most critical shipping lanes, without possessing the capacity to control it.
Bab al-Mandab in the Equation of Regional Escalation
The Bab al-Mandab Strait is one of the most critical chokepoints in global maritime trade. It forms part of the Red Sea–Suez Canal route, through which approximately 9% of global oil trade passes, in addition to millions of barrels transported daily. This dependence gives the strait high strategic value. Its importance became particularly evident during Houthi attacks on commercial vessels in the Red Sea (2023–2024), which forced major shipping companies to reroute away from Bab al-Mandab, leading to increased transport and insurance costs, as well as longer transit times.
In this environment, Bab al-Mandab is no longer merely a transit corridor; it has become an instrument of influence. Non-state actors exploit this reality to exert indirect pressure on supply chains. The Houthis exemplify this model through the use of low-cost tools such as drones, explosive-laden boats, and naval mines—methods designed to raise the risk and cost of maritime navigation without requiring direct territorial control.
This pattern of influence has translated into tangible operational outcomes, as seen in the seizure of the cargo ship Galaxy Leader in November 2023, as well as a series of attacks targeting commercial vessels in early 2024. These incidents prompted the launch of international security arrangements aimed at protecting maritime navigation. Collectively, they reflect a shift in the center of gravity—from direct military control to the ability to disrupt flows and increase operational costs.
Targeting patterns in the Red Sea also raise clear legal challenges related to the principle of freedom of navigation. The selective targeting of vessels based on identity or destination constitutes a practical deviation from the legal framework governing international straits, particularly the principles enshrined in the United Nations Convention on the Law of the Sea (1982), which guarantees freedom of navigation and the right of transit passage through international straits without obstruction or discrimination.
At the regional level, these developments can be understood within a broader approach centered on distributing pressure across multiple strategic maritime routes—particularly between the Strait of Hormuz and Bab al-Mandab. This approach enhances the ability to influence global energy markets while reducing the risks associated with direct confrontation.
Development of Houthi Military Capabilities in the Maritime Domain
Houthi military capabilities have undergone a gradual transformation—from primarily land-based combat prior to their takeover of the Yemeni government in September 2014, to the development of a hybrid maritime capability over a decade of controlling large and strategic parts of Yemen. These capabilities now enable them to disrupt the maritime environment in the Red Sea and the Bab al-Mandab Strait, within an approach centered on access denial through low-cost, high-impact tools. This shift reflects a transition in operational doctrine—from territorial control to maritime attrition and the systematic increase of costs imposed on international navigation.
In this context, the group has, with direct Iranian support, developed a multi-layered weapons system combining coastal missile capabilities, unmanned systems, and unconventional maritime assets. This structure enables the execution of threats across varying ranges and through synchronized methods. Analyses suggest that this system relies on a mix of cruise and ballistic missiles—locally modified with external technical support—granting the group the ability to cover a wide operational range across the Red Sea and the Gulf of Aden.
Specialized studies on Houthi maritime capabilities indicate that the introduction of anti-ship ballistic missiles represents a qualitative shift in the nature of maritime threats. It expands targeting capacity from a limited coastal scope to the ability to strike moving targets at sea, thereby increasing the level of complexity faced by naval defense systems.
Concurrently, the group has expanded its use of explosive-laden unmanned surface vessels as part of a non-conventional offensive system designed to overwhelm maritime defenses. This is complemented by the deployment of naval mines as an underwater threat vector. Together, these tools reflect an increasing reliance on low-cost, high-impact capabilities across a wide maritime theater that includes the Red Sea, Bab al-Mandab, and the Gulf of Aden—further complicating navigation conditions and raising operational risks.
Unmanned aerial vehicles (UAVs) also play a dual role within this system, being used for both intelligence, surveillance, and reconnaissance (ISR) as well as direct strike operations. This enhances the group’s ability to integrate targeting and attack functions while reducing dependence on conventional detection methods.
The structure of this system demonstrates a high degree of operational flexibility and survivability. The group relies on a geographically dispersed network of mobile and concealed launch platforms across coastal and mountainous areas, making preemptive targeting more difficult. It also leverages a combination of local and Iranian capabilities in assembly and maintenance using smuggled components, allowing for the regeneration of capabilities and sustained operational effectiveness despite military pressure. This model reflects a high level of adaptation to conflict conditions and reinforces the group’s capacity to operate within asymmetric warfare frameworks.
Naval mines, in particular, represent one of the most effective low-cost pressure tools, capable of disrupting maritime traffic or raising operational risks without direct engagement—thereby reinforcing the strait’s function as a zone of disruption.
Accordingly, these capabilities operate within a broader logic of anti-access/area denial, aimed at exhausting international naval capacities through asymmetric, cost-effective tools—ultimately transforming the Bab al-Mandab Strait into a sustained strategic pressure point on global maritime routes.
Determinants of Escalation in the Bab al-Mandab Strait
Escalation dynamics in the Bab al-Mandab Strait are not rooted in local Yemeni drivers alone; rather, they are embedded within a broader regional escalation framework linked to the strategic confrontation between Iran and the United States. At the core of this dynamic lies the level of pressure imposed on Iran—particularly through maritime and economic measures targeting trade flows and energy exports. As this pressure intensifies, Tehran has demonstrated a growing reliance on indirect instruments across multiple maritime theaters, including the Red Sea, as a means of redistributing pressure, increasing the costs of containment, and avoiding direct confrontation. This reflects a dual-track Iranian strategy that treats the Arabian Gulf and Bab al-Mandab as interconnected arenas of strategic leverage.
Within the context of escalation tied to the Israeli-American confrontation with Iran, recent Iranian signaling illustrates a calibrated deterrence posture that extends beyond the immediate theater of engagement. Official statements have indicated a willingness to expand the scope of response to include the Arabian Gulf, the Sea of Oman, and the Red Sea, with explicit references to the potential disruption of commercial shipping. Parallel statements by the Islamic Revolutionary Guard Corps regarding the possible closure of the Strait of Hormuz—framed as a response to perceived maritime restrictions on Iranian trade—underscore a strategic shift toward leveraging maritime chokepoints as instruments of coercive pressure.
These signals are further reinforced by Iranian media narratives downplaying the prospects of meaningful negotiations, alongside warnings from military officials regarding the potential for broader escalation. Collectively, this discourse points to a deliberate effort to expand the geographic scope of confrontation, repositioning the Red Sea—and by extension Bab al-Mandab—as a complementary pressure arena within a wider strategic equation centered on global trade and energy flows.
Within this framework, Saudi Arabia emerges as a key stabilizing variable in the escalation equation. Energy security considerations and the imperative of safeguarding export routes have driven Riyadh toward a strategy of calibrated containment, particularly in light of its increasing reliance on Red Sea export infrastructure. This posture reflects a growing sensitivity to the risks associated with escalation spillover into the Red Sea, incentivizing de-escalatory behavior aimed at preventing the transformation of Bab al-Mandab into a direct theater of sustained attrition.
At the same time, the expansion of coordination between the Houthis and select non-state actors along the western littoral of the Red Sea—particularly in the Horn of Africa—introduces an additional layer of complexity. This dynamic effectively broadens the threat perimeter to include both shores of the strait, transforming Bab al-Mandab from a unidirectional pressure point into a multidimensional zone of contested influence, thereby complicating efforts at containment.
The presence of international naval forces—most notably the United States—constitutes another critical variable shaping the contours of escalation. Recent force posture adjustments in the Red Sea, including the redeployment of high-value naval assets such as the USS Gerald R. Ford carrier strike group, reflect an increasing recognition of the evolving asymmetric threat environment and the strategic importance of safeguarding maritime corridors.
However, while such deployments contribute to risk management and deterrence signaling, they remain structurally limited in their ability to neutralize low-cost, high-dispersal threat vectors, including coastal missile systems and unmanned platforms. As a result, the prevailing dynamic is one of managed escalation, where containment replaces decisive military resolution.
Overall, escalation in Bab al-Mandab is best understood as the product of interacting strategic variables: the level of pressure on Iran, Saudi Arabia’s energy security calculus, the operationalization of non-state actors, and the posture of international naval forces. Together, these factors sustain a fluid but constrained escalation environment, in which the strait functions as a persistent node of strategic pressure within the broader regional order.
Limits of Capability and Impact in the Bab al-Mandab Strait
Available field data and analysis point to a critical distinction between two concepts that are often conflated in assessments of the maritime environment in the Bab al-Mandab Strait: full closure of the waterway and disruption of navigation. Closure, as a military objective, requires sustained sea and air control, along with advanced conventional capabilities, including secure supply lines and dominance over the maritime domain—conditions that are typically beyond the reach of non-state actors. Disruption, by contrast, represents a more attainable approach, centered on raising operational risks without exercising actual control over the passage.
Against this backdrop, recent Houthi behavior can be understood as a form of calibrated disruption. Rather than seeking to shut down the strait, their operations rely on limited, selective targeting and credible threats that create a high-risk maritime environment. This, in turn, directly shapes the decision-making of shipping and insurance companies, prompting rerouting or avoidance of the Red Sea despite the higher costs of alternative routes. The shift here is subtle but significant: from controlling the passage to influencing its function.
This approach works through sustained pressure and selective escalation, raising operating costs and generating persistent uncertainty. The result is a disproportionate economic effect achieved through relatively limited means. This pattern became particularly visible during 2023–2024, when repeated attacks on commercial vessels in the Red Sea pushed major shipping companies to reroute via the Cape of Good Hope instead of the Suez Canal, despite the additional time and cost involved.
The seizure of the Galaxy Leader in November 2023 further illustrates the symbolic dimension of this strategy, where targeted actions are designed not only for tactical impact but also to amplify perceived risk. This was reflected in the immediate rise in maritime insurance premiums. Alongside this, data from the Suez Canal in 2024 showed a decline in vessel traffic, driven by the global redistribution of shipping routes—demonstrating that disruption can produce tangible effects without reaching the threshold of full closure.
Taken together, these dynamics suggest that impact is not measured by the number of attacks, but by their effect on market behavior, supply chains, insurance costs, and the restructuring of maritime logistics. At the same time, the limits of this model remain clear. The absence of direct maritime control constrains the ability to impose a complete blockade, while the reliance on attritional tactics favors sustained pressure over decisive outcomes. In parallel, the growing presence of international naval forces in the Red Sea imposes a continuous containment environment, reducing the likelihood of escalation to higher-intensity scenarios.
What this ultimately reflects is a broader shift in the use of force in the maritime domain. While closure requires conventional military superiority, disruption enables non-state actors to generate strategic and economic effects through limited means. The more plausible threat, therefore, lies not in the closure of the strait, but in the persistence of managed risk—one that reshapes global trade behavior without bringing maritime traffic to a complete halt.
Implications of Disruption in the Bab al-Mandab Strait
Amid evolving threat patterns, the Bab al-Mandab Strait is increasingly being repositioned in ways that could transform it into a form of “maritime pincer,” exerting growing influence over the flow of global trade through the Red Sea. In this context, the persistence of disruption—or even credible threat—would likely trigger a broad repricing of maritime risk. This would be reflected in rising insurance premiums and the sustained rerouting of shipping toward longer and more costly alternatives, most notably the Cape of Good Hope. Over time, such alternatives risk shifting from temporary contingency measures to structurally embedded routes, increasing the cost of energy and goods. This dynamic underscores how low-cost tools can generate systemic inefficiencies in the global trading system without requiring direct military control over the waterway.
At the security and political levels, this trajectory places mounting pressure on key regional actors, particularly Saudi Arabia, which faces a delicate balancing equation between safeguarding energy security and maintaining stable export routes. While the western coastline and Red Sea ports have become central to diversifying export pathways beyond the vulnerabilities of the Strait of Hormuz, the prospect of Bab al-Mandab evolving into a sustained zone of attrition exposes these same alternatives to heightened risks and rising security costs. As a result, Saudi policy has tended toward a calibrated containment approach—aimed at limiting escalation while avoiding direct confrontation, in order to protect broader economic priorities.
More broadly, these developments point to the emergence of a new pattern in which maritime corridors are no longer treated as neutral transit arteries, but as strategic pressure points subject to political instrumentalization by non-state actors. This shift is likely to reinforce the gradual militarization of the strait, reflected in the expansion of international naval presence and the proliferation of security arrangements. In turn, the stability of maritime navigation becomes less anchored in established legal frameworks and more contingent on shifting regional power balances.
Conclusion
Recent developments suggest that the Bab al-Mandab Strait has been incorporated into a wider Iranian strategic framework through the operational use of the Houthis, with a clear emphasis on shifting the center of gravity from direct military control of maritime chokepoints to indirect influence over global trade flows by generating sustained operational risk. This approach challenges the effectiveness of conventional deterrence models, which rely on naval presence and direct engagement, and instead highlights disruption as a practical alternative to control within asymmetric conflict environments.
The significance of this shift lies in the ability of non-state actors to induce persistent instability in maritime navigation, raising transport and insurance costs and reshaping the behavior of shipping companies and global trade routes—without the need to fully close the strait or engage in large-scale military confrontation.
