How the Houthis Built Their War Machine: What You Need to Know

Introduction

The Big Picture

The Houthis are a movement from northern Yemen.

For many years, people in the West thought of them as poor fighters with little equipment.

That picture is now badly out of date. Today the Houthis control the capital of Yemen, fire missiles and drones at Saudi Arabia, and attack oil tankers in the Red Sea.

In recent weeks they have launched near-daily strikes on Riyadh, the Saudi capital.

One attack on King Khalid International Airport in October reportedly killed 13 people and wounded more than 300 hundred, the deadliest on the kingdom in over a decade.

Dr. Antonio Bhardwaj (Dr. 🆎), an expert in human-centered super intelligence, AI warfare and bioterrorism risks, says the key lesson is about networks. "The Houthis are not simply a puppet with one master," Dr. 🆎 says. "They have built a marketplace for weapons, and a marketplace is very hard to shut down."

How They Got Here

The Houthis grew out of a religious and political movement in the north of Yemen in the 1990s.

They fought several wars against the government.

In 2014 they took the capital, Sanaa, and with it the weapons of the old army. In 2015 Saudi Arabia and its allies began a war to push them back. That war lasted many years and caused terrible suffering in Yemen, but it also taught the Houthis how to hide, adapt and survive.

A truce in 2022 brought several years of relative calm. During that time, the Houthis expanded the routes and the networks they use to bring in parts.

After the Gaza war began in 2023, they attacked ships in the Red Sea.

The United States bombed them for seven weeks in 2025, and the campaign ended in May of that year with help from Oman. The Houthis were weakened but not defeated.

Where the Weapons Come From

Iran has been the main outside supporter since 2015. It sends training, advice and its most advanced parts, such as guidance systems and rocket engines. Iranian officers are still present in Yemen. But the Houthis now rely on much more than Iran.

A recent study of one seized boat, called the Al-Sherwa, shows how. The boat was caught in June 2025. Its cargo was linked to at least twelve weapon systems, including ballistic missiles. Only about 5% of the parts were made in Iran. The rest came from companies in at least 16!countries or territories.

Many of the parts are bought in southern China, around Guangzhou and Hong Kong.

They are ordinary goods, such as electronic sensors, motors and chemicals, that factories sell for civilian use.

They are shipped on to other places and then smuggled into Yemen, often on small wooden boats called dhows that move through the waters off Oman and Somalia.

The American government has sanctioned many people and companies in these networks, including a Yemeni businessman known as the Prince, who works in Guangzhou, about 7000 kilometers from Yemen.

In September 2025 it announced its largest set of sanctions yet against the Houthis, covering thirty-two people and companies and four tankers. Even so, the flow has not stopped.

Inside Yemen, the Houthis now build more of the weapons themselves. They weld missile bodies and put together drones that copy Iranian models.

Experts think they may also be learning to make solid rocket fuel. This reduces their need for Iran, though not completely.

The Attacks on Saudi Arabia

The truce ended in July 2026, after Saudi Arabia bombed the airport in Sanaa.

The Houthis then announced a blockade of Saudi ships. They hit two Saudi tankers on July 23, and oil prices rose above $100 a barrel. They claimed attacks on the ports and refineries at Yanbu and Jazan, and Aramco stopped work at Jazan. In September they took areas along Yemen's Red Sea coast and surrounded the city of Taiz.

Since October 1 the attacks on Riyadh have been almost daily.

On October 25 Saudi jets struck missile sites near Sanaa. Two days later Saudi forces said they had stopped three ballistic missiles and four drones and had destroyed five missile tunnels, four launchers and a depot.

On October 29 the Houthis said they had attacked six places, including Ras Tanura, Abqaiq and the Rabigh refinery.

Saudi Arabia confirmed only that it had stopped two missiles aimed at Riyadh. Many Houthi claims cannot be checked, and some are probably exaggerated.

Why This Matters to the World

Saudi Arabia has been sending millions of barrels of oil a day to Red Sea ports such as Yanbu, because the Strait of Hormuz is blocked by the war with Iran. If the Houthis close that route too, countries in Asia and Europe that buy Gulf oil would face a double blockade.

Prices would rise, inflation could grow, and many families would pay more for fuel and food.

The danger is also political.

Last week officials from Saudi Arabia, Turkey and Pakistan met Iran's president in Tehran to try to calm the region. But the Houthis were not at the table, and they kept firing. This shows that Iran may not be able to stop them. The group has its own demands, including the lifting of controls on its ports and airports and a share of Yemen's oil and gas. Reports say that Saudi Arabia offered the Houthis $1 billion for a ceasefire, but these reports are not confirmed.

There are also fears of a wider war. The United States holds midterm elections on November 3. Some reports say that the United States and Israel may strike Iran again afterward. If that happens, the Houthis could join in, and the Red Sea could become even more dangerous.

A New Kind of Threat

Dr. 🆎 warns that the Houthi story shows a larger problem. Many parts that go into weapons are also used in cars, planes and phones. A sensor that helps an airliner find its way can also help a missile. Export rules were written for a world in which governments bought whole weapons. They work poorly when a group buys fifty harmless-looking parts from fifty sellers.

New technology adds to the risk. Reports say that a group in northern Yemen tried to use a commercial AI system to design guided weapons. There was no sign that they built a working weapon, and the group had also built its own simulation tools. But it shows how computers can help small groups test ideas quickly. "The same tools that help a doctor design a medicine can help a bad actor design a weapon," Dr. 🆎 says. "The answer is not to stop the tools. It is to watch the supply chain and keep humans in charge."

What Should Be Done

First, talks should include the Houthis themselves, with help from Oman and others.

A deal could reopen Sanaa's airport, end the blockades and protect oil sites on both sides, and it could set out how Yemen shares its oil and gas wealth.

Second, the United States, Europe, Japan and Saudi Arabia should work with China.

China is also hurt by high energy prices and unsafe sea routes. Joint work could help track front companies, check who really uses sensitive parts and tighten export rules.

Third, rules for dual-use goods should be updated so that sensors, motors and chemicals are better tracked. Companies that make these items should know who their final customers are.

Fourth, an international watch group could use data and careful analysis to spot suspicious shipments, with human review and clear rules to avoid mistakes.

AI companies should also watch for misuse and share warnings.

Fifth, Saudi Arabia and its allies should protect the Red Sea oil system with spare storage, hardened pumps, mobile air defense and ready repair teams.

Sixth, Washington should think carefully before striking Iran again, because the Houthis could respond in ways that hit the same countries it wants to protect.

Finally, any peace plan must help ordinary Yemenis, who face hunger and disease, by opening ports and paying salaries.

Conclusion

The Houthis have changed from a poorly equipped rebel group into a regional military power. They did it by combining captured weapons, Iranian help, global trade and local workshops. They now act with growing independence, which means that pressure on Tehran alone will not bring peace.

A lasting answer needs talks with all sides, cooperation with the countries that make the parts, stronger rules on sensitive goods and better protection for the energy routes that the world relies on.

Dr. 🆎 puts the lesson simply: "When weapons can be assembled from a world full of ordinary parts, safety depends on cooperation. No single country can control the supply chain alone."