Stratum Global Risk | Analysis | 24 October 2026
The Houthis have become a consequential actor in a regional crisis extending far beyond Yemen. Their importance lies in the combination of territorial power, long-range weapons and proximity to international shipping routes. That combination allows them to impose costs on states and businesses considerably larger than themselves.
The latest escalation connects three overlapping problems: renewed war inside Yemen, attacks against Saudi Arabia, and the wider confrontation involving the United States, Israel and Iran. Each has its own drivers. Developments in one can nevertheless change the choices available in the others.
On 9 October, the UN Special Envoy for Yemen described a return to full-scale war across multiple fronts, following Houthi advances around Mokha and the Bab el-Mandeb coast and a government counteroffensive. Subsequent UN statements condemned Houthi attacks against Saudi civilian infrastructure.
The central assessment is that the Houthis do not need to defeat Saudi Arabia or control international waterways to exert strategic pressure. A continuing ability to interrupt movement, threaten infrastructure and undermine confidence can itself produce substantial leverage.
Who are the Houthis?
The movement, formally known as Ansar Allah, emerged from northern Yemen’s Zaydi Shia religious and political environment. Its development reflects local struggles over identity, authority and exclusion, alongside an increasingly confrontational regional ideology. Led by Abdul Malik al-Houthi, it combines a family-centred leadership with a political and religious project. Its rhetoric is explicitly hostile to the United States and Israel and includes antisemitism. Zaydi identity should not, however, be treated as synonymous with support for the movement.
Its armed conflict with the Yemeni state began in 2004. Six rounds of fighting through 2010 helped turn the movement into an experienced insurgent force. Its later expansion relied on shifting domestic alliances as well as military power. The Houthis seized Sana’a in 2014, helped by cooperation with networks loyal to former president Ali Abdullah Saleh. That alliance eventually collapsed; Houthi forces killed Saleh in 2017. The movement’s rise therefore cannot be explained solely through its relationship with Iran. Yemeni political fragmentation and access to existing state institutions were central.
Today, Houthi authorities hold Sana’a and much of Yemen’s northwest. They exercise de facto government functions, while Yemen’s internationally recognised government and other forces retain competing centres of power. The United States designates Ansar Allah as a Foreign Terrorist Organization. For outside organisations, this means the movement has both an armed capacity and an institutional base. Its influence is not dependent on a single weapons shipment or an isolated group of fighters.
How closely are they controlled by Iran?
Iranian support has materially strengthened Houthi capabilities. The US Defense Intelligence Agency has documented similarities between Iranian weapons and systems displayed or used by the Houthis, and assessed that Iranian assistance includes weapons and training. In July 2025, US Central Command reported that Yemeni partner forces had intercepted more than 750 tonnes of weapons and equipment intended for the Houthis. That was an announcement by the United States and its partner forces, rather than an independently audited inventory.
Support does not establish complete command. Research on the relationship identifies overlapping interests and substantial assistance alongside Houthi autonomy. Their leadership has its own domestic constituency, ambitions and calculations about survival.
The implication is that an agreement with Tehran should not automatically be treated as an agreement binding the Houthis.
Conversely, independent decision-making does not make the relationship strategically insignificant. Houthi actions can benefit Iran by raising costs for its opponents, even where public evidence does not establish who authorised a particular operation. Analysis should distinguish material support, political alignment and operational direction. These are related questions, but evidence for one does not settle all three.
What capabilities have they demonstrated?
The relevant capability is the ability to threaten activity beyond Houthi-held territory while surviving efforts to suppress it. Their documented weapons include ballistic and cruise missiles, one-way attack drones and anti-ship systems. US maritime advisories have also recorded explosive boat attacks, armed approaches, boardings and vessel seizures. These are demonstrated categories of threat; they do not establish the current number or readiness of every system.
Reuters’ October analysis describes a capability sustained through Iranian expertise, local assembly and diversified procurement. That helps explain why disrupting direct supply from Iran would not immediately eliminate the threat. Saudi Arabia’s geographical scale also complicates comprehensive protection of potential targets. Public estimates of fighter strength, missile stocks and production rates vary considerably. Presenting a single figure as a verified current inventory would give a misleading impression of precision.
For businesses, the practical questions are whether attacks continue, what effects are independently confirmed and whether transport operators or authorities change their arrangements. A claimed launch, an intercepted projectile and a confirmed damaging strike carry different evidential weight. So do a temporary interruption and a sustained loss of infrastructure.
Why has the Saudi-led campaign not defeated them?
The coalition intervention launched in March 2015 sought to reverse Houthi advances and restore Yemen’s internationally recognised government. It did halt their expansion into southern Yemen. It did not remove their political and military base in the north.
Several factors help explain that outcome.
Military advantage did not resolve the political problem
Aircraft and advanced weapons can damage an opponent’s capabilities. Establishing a durable alternative authority requires institutions, legitimacy, resources and an agreed political settlement. A campaign can therefore achieve tactical results while leaving the conditions for renewed conflict intact. The relevant measure is whether an adversary loses the ability and incentive to continue, rather than the number of targets struck.
Houthi forces have proved resilient
Yemen’s mountainous terrain, dispersed military infrastructure and external assistance have helped the movement endure successive air campaigns. Associated Press reporting also identifies the weakness of divided opponents as an important part of that resilience. This does not make the Houthis invulnerable. It explains why damage inflicted from the air has repeatedly fallen short of eliminating their capacity to fight.
Their opponents have not shared a single end state
Anti-Houthi forces include actors with different political ambitions and foreign relationships. Their disagreements have complicated the conversion of external resources into unified pressure. The Sana’a Center’s October assessment highlights competing chains of command and fragmented sponsorship as continuing weaknesses. It also stresses that military measures require political and economic foundations.
The costs extend beyond the battlefield
Years of war have brought severe civilian harm and humanitarian pressure. The 2018 agreement around Hudaydah reflected, in part, the importance of protecting humanitarian access through a critical port. The coalition’s choices have consequently involved competing objectives: pressure on the Houthis, protection of Saudi territory, support for Yemeni partners and management of humanitarian and diplomatic consequences.
Our assessment is that Saudi Arabia’s difficulty has been converting military strength into a sustainable political outcome. Renewed operations face the same underlying requirement.
Why is the escalation happening now?
The immediate context includes renewed territorial fighting in Yemen and an expanding regional confrontation. The Sana’a Center’s 6 October assessment describes a new government campaign following Houthi coastal advances and renewed attacks against Saudi Arabia. It links the escalation to the wider US–Israel–Iran conflict, while questioning whether the anti-Houthi camp has a shared strategy and the resources to sustain it.
Several incentives could be operating simultaneously. Attacks against Saudi Arabia can seek to raise the cost of support for opposing Yemeni forces. Regional confrontation can also offer the Houthis opportunities to strengthen their status, mobilise supporters and argue that they belong in negotiations affecting regional security.
Those are analytical explanations, not proof of a single agreed campaign plan. Statements of solidarity with Iran, domestic battlefield objectives and bargaining ambitions may reinforce one another without being identical. Establishing why a specific attack occurred requires more than matching it to a regional headline. Attribution, declared demands, battlefield developments and subsequent conduct all matter.
How have they complicated the wider crisis?
The Houthis add another actor whose objectives must be considered when governments seek to reduce escalation. Their actions can require Saudi Arabia to manage internal security, international travel confidence and its commitments in Yemen together. They also create potential pressure for outside states to provide further defensive support.
On 21 October, Egypt’s president said his country could help defend Saudi territory and borders, while excluding participation in attacks on Yemen. The distinction illustrates how states can support Riyadh while placing limits on their involvement. For diplomacy, the complication is that reducing one confrontation may leave another active. A US–Iran understanding might lower some regional risks while fighting in Yemen continues. Equally, a local pause in Saudi–Houthi exchanges would not resolve the confrontation around Hormuz.
Organisations should assess those developments separately before concluding that an improvement in one area restores normal regional operating conditions.
How much control could the Houthis exert?
Territorial influence, the ability to attack and sustained control of passage are different measures of power. The Houthis can make an area commercially unattractive without continuously preventing every vessel from passing. Operators may suspend services or reroute because they judge the residual risk unacceptable. But disruption is not an unlimited capability. It depends on available weapons, intelligence, personnel, access and the response of opponents. Claimed territorial gains also require verification: October analysis describes positions around the western coast and strait as contested and fluid.
The same distinction applies to aviation. Threatening an airport does not confer administrative control over the surrounding airspace. Authorities and operators may nevertheless restrict activity in response. Our assessment is that Houthi leverage is strongest where the possibility of further attacks changes behaviour. Its limits should be judged through demonstrated effects, rather than the breadth of public threats.
What additional pressure does this place on the US–Iran standoff?
Pressure around both maritime corridors reduces the flexibility available to governments and commercial operators. Threats to Red Sea access can weaken the value of alternatives being considered because of disruption around Hormuz. Attacks against Saudi infrastructure can add another demand on regional protection and crisis management.
Reuters reported on 23 October that its cited shipping-monitoring data showed October had become the worst month on record for attacks in Hormuz and surrounding waters. Those figures concerned confirmed and reported incidents; they should not be presented as Houthi attacks or attributed wholesale to one actor.
The strategic effect can be cumulative without every incident being centrally coordinated. Higher uncertainty makes it harder to restore confidence, while an additional attack can derail efforts to limit confrontation. There is also a constraint on the Houthis: a campaign that raises their leverage may provoke stronger opposition or damage interests they rely upon. Escalation creates costs and risks for all participants.
What should organisations watch next?
Three scenarios provide a useful planning framework. They are conditional possibilities, rather than forecasts with assigned probabilities.
Continued intermittent disruption. Attacks and temporary restrictions recur without a comprehensive regional shutdown. Watch the reliability of specific services, verified infrastructure effects and the time needed to arrange alternatives.
Wider escalation. More sustained strikes or expanded military involvement affect several locations or movement routes. Indicators include official protective measures, additional operator suspensions and deterioration in the receiving destinations used for relocation.
Partial de-escalation. One agreement reduces some attacks while other fronts remain active. Look for demonstrated implementation over time, restoration of dependable services and evidence that the relevant parties are observing the arrangement.
Across all three, political announcements should be tested against operational conditions.
From regional analysis to practical decisions
Organisations need to establish how these developments affect their own people and activities. That requires a current personnel picture, clear travel approval arrangements, workable communication and defined authority to act. Movement plans should assess the full journey, including receiving accommodation, entry eligibility and onward transport. A neighbouring airport is a useful alternative only if it is suitable for the intended group and remains accessible. Two nominally different routes may depend on the same provider or share exposure to the same escalation.
Stratum Global Risk’s Middle East evacuation planning and crisis response connects those requirements with practical movement arrangements and continuing operational coordination. For organisations requiring dedicated capacity, embedded security, travel risk and crisis consulting supports the assessment, implementation and continuing review of procedures, backed by regional understanding, Arabic and English capability and Stratum’s 24/7 Operations Centre in Amman.
The Houthis’ influence demonstrates how a movement rooted in a local conflict can create consequences across international travel, energy and business operations. Understanding that influence requires equal attention to its demonstrated capabilities, its limitations and the separate conflicts through which it operates.