The Houthis, officially known as Ansar Allah, are a Yemeni political and armed movement that emerged from the Zaydi Shia communities of northern Yemen. Led by Abdul-Malik al-Houthi, the group controls Sana'a, Yemen's capital, and substantial territory in the country's north.

The movement began as a religious and political revival effort before becoming an insurgency in 2004. Its seizure of Sana'a in September 2014 transformed Yemen's political landscape and helped set the stage for the Saudi-led military intervention in March 2015.

Today, the Houthis are a major force in Yemen's civil war and a significant regional security actor. Their missile and drone capabilities, relationship with Iran, attacks on shipping in the Red Sea, and confrontation with Saudi Arabia have given a conflict rooted in Yemen consequences far beyond its borders.

The central question is how a movement that began in Yemen's northern mountains acquired the political control, military capabilities and regional influence it possesses today.

Saudi Arabia possesses advanced fighter aircraft, modern missile-defense systems and one of the Middle East's largest military budgets. Yet across its southern border, Yemen's Houthi movement has repeatedly demonstrated the ability to threaten Saudi airports, energy installations and strategic infrastructure.

The renewed confrontation in October 2026 has exposed this imbalance once again. Houthi missile and drone attacks have caused casualties and disruption inside Saudi Arabia, while Saudi-backed forces and the Houthis are fighting over territory in Yemen.

The conflict raises a striking question: how did a relatively small religious and political movement from Yemen's northern mountains develop into a force capable of challenging a major regional power?

Understanding that transformation requires going back more than two decades, to the origins of the Houthi movement, its struggle against Yemen's former president Ali Abdullah Saleh, its seizure of Sana'a on September 21, 2014, and the Saudi-led military intervention that began six months later.

The Houthis did not become powerful simply because Iran supplied them with weapons. Their strength emerged from the collapse of Yemen's political order, their control of state institutions, difficult mountain terrain, military adaptation and the repeated failures of their opponents to build a united front.

Who Exactly Are the Houthis?

The Houthis are a Yemeni political, religious and armed movement officially known as Ansar Allah, meaning Supporters of God.

Their origins lie in Saada, a mountainous governorate in northern Yemen bordering Saudi Arabia.

The movement emerged from efforts to revive Zaydi religious and cultural identity during the late twentieth century. Zaydism is a branch of Shia Islam with a long history in Yemen.

For centuries, Zaydi imams exercised political authority over parts of northern Yemen. That system ended with the republican revolution of 1962, although Zaydi religious traditions and social networks remained influential.

During the following decades, many Zaydi communities became concerned about declining religious influence, political marginalization and the expansion of competing religious movements, including Saudi-influenced Salafi institutions.

The Houthi movement grew within this environment.

Its early development was associated with Hussein Badr al-Din al-Houthi, a religious and political figure who criticized the Yemeni government and its relationship with the United States.

Following the American invasion of Iraq in 2003, his criticism of American influence became increasingly prominent.

Over time, the movement developed a strongly anti-American and anti-Israeli political identity. Its rhetoric also reflected the religious and political influences of Iran's Islamic Revolution.

However, the Houthis should not be confused with Yemen's entire Zaydi population.

Not all Zaydis support Ansar Allah, and the conflict cannot accurately be reduced to a simple struggle between Shia and Sunni Muslims. Political allegiance, regional grievances, tribal relationships and competition for state power have been equally important.

The First Houthi War: Why the Movement Took Up Arms in 2004

The decisive turning point came in 2004.

President Ali Abdullah Saleh's government regarded Hussein al-Houthi and his growing movement as a threat to state authority.

Attempts to arrest him triggered armed confrontation between government forces and his supporters in Saada.

Hussein al-Houthi was killed by Yemeni government forces in September 2004.

His death did not destroy the movement.

Instead, it helped transform a network of religious activists into an armed insurgency whose followers increasingly identified themselves with the Houthi family.

Leadership eventually passed to Hussein's younger brother, Abdul-Malik al-Houthi, who remains the movement's central leader.

Between 2004 and 2010, the Houthis fought six major rounds of conflict against the Yemeni government, commonly called the Saada wars.

These wars proved essential to their military development.

The Houthis learned how to operate in mountainous terrain, organize irregular fighting units, exploit local knowledge and survive attacks by a government possessing considerably greater military resources.

Yemeni government campaigns inflicted heavy losses, but they also generated resentment among communities affected by fighting, displacement and destruction.

Some tribal groups shifted their support away from the government, while others remained firmly opposed to the Houthis.

By the end of the Saada wars, the movement had developed a more experienced military leadership and stronger territorial foundations than it possessed at its beginning.

The Saudi Connection Began Before 2015

Saudi Arabia's military confrontation with the Houthis did not begin with the major intervention in 2015.

During the final phase of the Saada wars in 2009, fighting spread toward the Saudi border.

Saudi forces became involved following cross-border clashes involving Houthi fighters.

For Riyadh, the events demonstrated that instability inside Yemen could directly threaten Saudi border security.

The conflict also reflected a longstanding Saudi concern: the emergence of a hostile armed movement along the kingdom's southern frontier.

As the Houthis grew more powerful, Saudi Arabia increasingly viewed them through the wider context of its regional rivalry with Iran.

Yet the group's origins were primarily Yemeni. Its emergence preceded the extensive Iranian military assistance that later strengthened its missile and drone capabilities.

This distinction matters because it explains why the movement could survive pressure even when its external supply networks were disrupted.

The Arab Spring: How Yemen's Political Collapse Helped the Houthis

In 2011, Yemen experienced mass demonstrations against President Saleh, who had ruled North Yemen from 1978 and unified Yemen from 1990.

The protests were part of the wider Arab Spring.

Saleh eventually transferred power to his deputy, Abdrabbuh Mansur Hadi, in 2012 under a Gulf-backed political transition.

But the transfer did not resolve Yemen's underlying problems.

The country remained divided by competing military commanders, tribal alliances, political parties, separatist movements and armed groups.

Hadi inherited a weak state whose security institutions were fragmented and whose economy was deteriorating.

The Houthis participated in elements of the political transition while simultaneously expanding their military influence in northern Yemen.

They fought rival tribal forces and groups associated with the Islamist Islah party.

The proposed division of Yemen into federal regions also created tensions. The Houthis objected to arrangements that they believed would limit their access to resources and strategic territory.

As political negotiations stalled, the Houthis increasingly concluded that battlefield success could achieve objectives they were unlikely to secure through the transitional process.

The result was a steady advance toward the capital.

September 21, 2014: The Day the Houthis Captured Sana'a

The Houthis captured Sana'a, Yemen's capital, on September 21, 2014.

This was the decisive event that changed Yemen's political future.

The takeover was not a sudden attack by an isolated militia.

By the summer of 2014, the Houthis had already expanded beyond their traditional stronghold in Saada.

In July, they captured Amran, a strategically important area north of Sana'a, after defeating forces linked to powerful tribal and military rivals.

The fall of Amran opened the northern approach to the capital.

The Houthis then exploited growing public frustration over fuel-price increases, corruption and the weakness of President Hadi's administration.

Demonstrations provided political pressure while armed units moved into strategically important positions.

In September, Houthi fighters entered Sana'a and seized major government and military facilities.

Crucially, important elements of Yemen's military did not mount a unified defense of the capital.

Some military and political networks associated with former President Saleh helped facilitate the Houthi advance.

A United Nations-brokered agreement was signed as the capital fell, but it did not restore effective government control.

The Houthis had gained control of the country's central political institutions.

This was the moment Ansar Allah ceased to be merely a northern insurgency and became the dominant armed power in Yemen's capital.

The Extraordinary Alliance Between the Houthis and Their Former Enemy

One of the most unusual episodes in the conflict was the alliance between the Houthis and Ali Abdullah Saleh.

Saleh had spent years fighting the movement.

His government had killed its founding leader and conducted repeated military campaigns against its forces.

Yet after losing the presidency, Saleh retained influence within Yemen's armed forces, security institutions and political networks.

Both sides now had a common opponent: the transitional political order led by Hadi and supported by rivals associated with Islah.

The alliance was therefore largely tactical rather than ideological.

Saleh's loyalists helped provide institutional knowledge, military personnel and access to equipment, while the Houthis supplied disciplined armed forces and expanding territorial control.

Together, they became substantially more powerful than either side might have been alone.

The partnership ultimately collapsed in December 2017, when Saleh broke with the Houthis amid fighting in Sana'a.

Houthi forces killed Saleh on December 4, 2017.

By then, however, Ansar Allah had consolidated enough control over northern Yemen to survive the rupture.

This illustrates a recurring feature of Houthi history: the movement has repeatedly benefited from alliances while remaining willing to eliminate former partners when those relationships become threats.

Why Saudi Arabia Intervened in March 2015

The fall of Sana'a was followed by the collapse of Yemen's remaining transitional arrangements.

In early 2015, Houthi forces increased pressure on President Hadi, whose government lost effective control of the capital.

Hadi eventually escaped to Aden in southern Yemen.

But Houthi and allied forces advanced southward, threatening Aden and the remaining territory held by the internationally recognized government.

Saudi Arabia responded.

On March 26, 2015, a Saudi-led coalition launched a military operation known as Operation Decisive Storm.

The declared objective was to restore Hadi's government and reverse the Houthi takeover.

Riyadh had several overlapping motivations.

First was border security. Saudi Arabia did not want an entrenched hostile military force controlling Yemen's north, particularly one capable of launching attacks into Saudi territory.

Second was the regional rivalry with Iran. Saudi leaders feared that Houthi control over Yemen could provide Tehran with an additional strategic partner on the Arabian Peninsula.

Third was the collapse of a neighboring state. A prolonged conflict in Yemen threatened Saudi economic interests, border regions and wider Gulf security.

Fourth was regional credibility. Allowing a hostile movement to overthrow a Saudi-backed government without a response could have damaged Riyadh's position as a leading Arab and Gulf power.

The coalition included the United Arab Emirates and other regional partners, while the United States provided forms of logistical and intelligence support.

Saudi Arabia expected its superior air power and coalition backing to place significant pressure on the Houthis.

The intervention, however, developed into a prolonged and costly conflict.

How Drones and Missiles Changed the Saudi–Houthi Balance

The most striking change in the conflict has been the emergence of Houthi long-range strike capabilities.

Saudi Arabia has a far stronger conventional military, but that advantage does not eliminate the danger posed by missiles and drones.

A relatively inexpensive drone can threaten a valuable installation.

A missile may force defenders to use costly interceptors.

Repeated attacks can disrupt flights, raise insurance costs, reduce investor confidence and force governments to devote substantial resources to protecting civilian infrastructure.

For the Houthis, achieving military parity with Saudi Arabia is unnecessary.

They do not need to defeat the Saudi air force or occupy Saudi territory to impose serious economic and political costs.

Their strategy relies heavily on the ability to threaten selected targets while preserving sufficient military capability to survive retaliation.

Saudi Arabia faces a different challenge.

Its large territory contains widely dispersed cities, airports, oil installations and industrial infrastructure.

Defending every potential target against every possible missile or drone attack is extremely difficult.

This is the central asymmetry of the conflict: the Houthis can inflict strategic disruption without possessing the overall military strength of the state they are attacking.

The Red Sea: How a Yemeni Conflict Became an International Security Threat

Yemen occupies one of the world's most strategically important maritime positions.

The Bab al-Mandeb Strait connects the Red Sea with the Gulf of Aden and routes leading into the Indian Ocean.

Ships using the Suez Canal must also pass through this broader maritime corridor.

This gives armed groups operating along Yemen's western coastline the potential to threaten international commercial traffic.

Beginning in late 2023, the Houthis attacked commercial shipping and launched missiles and drones toward Israel, describing the campaign as support for Palestinians during the Gaza war.

The United States and other countries responded with maritime protection operations and strikes against Houthi military targets.

The campaign demonstrated that Yemen's conflict was no longer confined to the Arabian Peninsula.

Disruption near the Red Sea can affect shipping schedules, insurance, energy transportation and trade between Asia and Europe.

The Houthis' ability to threaten maritime routes therefore gives the movement leverage extending far beyond Yemen's territory.

Why Saudi Arabia Has Not Been Able to Defeat the Houthis

Saudi Arabia's difficulties are often interpreted as evidence that its military equipment is ineffective.

That explanation is incomplete.

The deeper problem involves the relationship between military power and political objectives.

Saudi Arabia can conduct airstrikes, deploy advanced defenses and support Yemeni ground forces.

But permanently defeating the Houthis would require more than destroying weapons.

It would require a credible political and military authority capable of governing the territory currently under Houthi control.

It would also require overcoming local loyalties, restoring institutions, rebuilding Yemen's economy and preventing renewed insurgency.

Those objectives are considerably more difficult than conventional battlefield operations.

For years, Riyadh sought to reduce its direct military involvement and explore negotiated arrangements.

The United Nations-brokered truce of April 2022 significantly reduced major fighting, even though the formal agreement expired later that year.

Subsequent negotiations offered opportunities to address border security, salaries, transport links and the political future of Yemen.

Yet the fundamental political conflict remained unresolved.

The renewed escalation in 2026 demonstrates how quickly military confrontation can return when underlying disputes have not been settled.

The Human Cost of the War

Any assessment of Houthi military strength must also examine what Yemen's population has endured.

The war has destroyed infrastructure, divided public institutions, disrupted trade and reduced access to basic services.

Civilians have suffered from airstrikes, shelling, mines, unlawful detentions and restrictions on humanitarian access.

Violations have been documented against multiple parties to the conflict, including Houthi forces, the Saudi-led coalition and Yemeni armed factions.

The United Nations estimated in its 2026 humanitarian response plan that more than 22 million people in Yemen would require humanitarian assistance and protection.

Approximately 18.3 million were projected to face acute food insecurity.

Renewed fighting has generated additional displacement.

In early October 2026, the International Organization for Migration reported that more than 200,000 people had fled their homes amid the latest escalation.

For Yemen's civilians, the central question is not which side possesses the greater arsenal.

It is whether a political settlement can end the repeated cycles of violence and allow ordinary life to recover.

Faultline Brief Assessment: The Houthis' Greatest Strength Is Not Their Arsenal

The Houthis' transformation from a regional insurgency into a formidable military and political organization has changed the balance of power on the Arabian Peninsula.

Their missiles and drones attract international attention, but their strength rests on deeper foundations.

They have survived repeated wars, exploited Yemen's political fragmentation, built military experience in difficult terrain, captured institutions, developed sources of revenue and obtained increasingly sophisticated external assistance.

Their opponents have often possessed superior weapons but lacked an equally coherent political strategy.

That is why the conflict cannot be understood simply as an Iranian-backed militia confronting a wealthy Saudi state.

It is also the story of Yemen's fractured political history, the failure of its transition after the Arab Spring and the difficulties of rebuilding a state after years of war.

Saudi Arabia can inflict substantial military damage on the Houthis. The Houthis can impose painful economic and security costs on Saudi Arabia.

Neither capability alone provides an obvious route to lasting peace.

The defining lesson of Yemen's war is that advanced military technology cannot substitute for political stability. Until Yemen's political future is resolved, the Houthis are likely to remain a powerful force—and the Saudi–Houthi confrontation will remain one of the Middle East's most dangerous unresolved conflicts.