Iran support for Houthis probed as Yemen war re-erupts and Saudi cities hit

Iranian support for Yemen's Houthis came into focus after a sharp wave of attacks on Saudi cities and infrastructure. The reports allege that Iran's Islamic Revolutionary Guard Corps, or IRGC, helped the Houthis conduct increasingly sophisticated missile and drone operations. The claims matter because Saudi Arabia supports Yemen's internationally recognised government and views the Houthi campaign as a major security threat.

The attacks included strikes on Saudi cities, energy facilities, and oil tankers. One attack on King Khalid International Airport in Riyadh reportedly killed 13 people. The Wall Street Journal also reported that Mahan Air flights carried IRGC officers, drone parts, missile guidance systems, and impact detonators to Yemen.

Iran and the Houthis denied the allegations. However, Saudi coalition spokesperson Turki al-Maliki confirmed that an unnamed external state had helped the Houthis develop advanced weapons. The reports could further intensify tensions between Iran and Saudi Arabia, which have already faced repeated Houthi attacks.

The Houthis are an armed group in Yemen, also known as Ansar Allah, meaning “Supporters of God.” They have been fighting Yemen's government since 2014. Their conflict is part of the wider Yemen war, in which Saudi Arabia supports the internationally recognised government against the Houthi movement.

The group is not described as a state, but it has captured significant territory. The article says the Houthis seized swaths of western Yemen and later won control of Yemen's Red Sea coastline and the strategically important Bab al-Mandeb strait. They have also developed a growing arsenal of missiles, drones, and explosive boats.

The Houthis insist they are independent from Iran, although the article describes strong ideological alignment and alleged military cooperation. Their reported access to advanced weapons has made them a more powerful actor in Yemen and a direct threat to neighbouring Saudi Arabia.

Iran is alleged to have provided the Houthis with several layers of military assistance. These included training, intelligence, tactical guidance, operational planning, and help targeting drone and missile attacks. The reported assistance would help the Houthis use advanced weapons more effectively, rather than merely supplying weapons without instruction.

The Wall Street Journal reported that Mahan Air flights carried IRGC paramilitary officers, drone parts, missile guidance systems, and impact detonators to Yemen. Analysts also pointed to alleged cooperation with Hezbollah experts. One report said IRGC officers were present on front lines and directed Houthi attacks.

Iran and the Houthis denied the allegations. Still, analysts cited the group's advanced arsenal as evidence of outside help, while Saudi coalition spokesperson Turki al-Maliki confirmed assistance from an unnamed regional state. The article also reports claims that precision technologies may have been smuggled through small submarines.

The Houthis expanded beyond their original position by capturing broad areas of western Yemen. The article specifically says a September offensive gave them control of Yemen's Red Sea coastline and the strategically important Bab al-Mandeb strait. These gains increased their military and strategic reach, although the article does not provide a precise area or length of coastline.

Control of the coast also matters because it can support access to maritime routes and make weapons smuggling harder to monitor. The article describes earlier interceptions of shipments along the Mocha coast toward Bab al-Mandeb. It also reports claims that small submarines were used to move precision technologies.

The territorial gains strengthened the Houthis during their war with Yemen's government and raised concern in Saudi Arabia. Analysts described Iran as treating the Houthis as a centre of military and security gravity south of the Red Sea. The article suggests this may prepare them for further conflict.

Saudi Arabia is involved because the Houthis have been fighting Yemen's government since 2014 and have launched repeated attacks across the border. The article describes dozens of Houthi drone and missile attacks on Saudi Arabia in recent weeks. These strikes targeted cities, energy facilities, oil tankers, and King Khalid International Airport in Riyadh.

Saudi Arabia supports Yemen's internationally recognised government through a Saudi-led coalition. The coalition fights the Houthis and seeks to help the government resist the group's territorial expansion. Coalition spokesperson Major-General Turki al-Maliki described the Houthi arsenal as increasingly advanced and said it reflected regional assistance from an external state.

The fighting has therefore become more than an internal Yemeni conflict. Houthi attacks have directly drawn Saudi Arabia into the war, while alleged Iranian support links the conflict to wider Saudi-Iranian rivalry. Further weapons transfers or attacks could deepen that regional confrontation.

Bab al-Mandeb is a strategically important maritime passage, so control by a heavily armed group could raise risks for international shipping. Threats to vessels, mines, missiles, drones, or explosive boats could force ships to avoid the route, delay deliveries, or pay more for protection. The article does not report that such disruption has already occurred.

The concern comes from the Houthis' expanding arsenal. Saudi coalition spokesperson Turki al-Maliki said the group had acquired ballistic missiles, offensive and suicide drones, and explosive-laden, high-speed boats. The article also describes Houthi control of the Red Sea coastline and Bab al-Mandeb after a September offensive.

The likely implication is greater pressure on regional and international maritime security. Any attack or attempted blockade could widen the war beyond Yemen and draw in outside powers. That possibility is an implication based on the strait's strategic importance; the article provides no specific trade-loss estimate.

A nonstate group can gain state-like capabilities when a regional power supplies technology and expertise. It does not need to manufacture every weapon itself. It can receive components, guidance systems, intelligence, training, and operational advice, then combine them with local personnel and battlefield knowledge. This can greatly improve range, accuracy, and coordination.

The article gives several examples. Mahan Air flights reportedly carried drone parts, missile guidance systems, and impact detonators. IRGC officers were allegedly present on front lines and helped direct attacks. Analysts also cited support for operational planning and possible smuggling of precision technologies through small submarines.

The result is a force able to deploy ballistic missiles, offensive and suicide drones, and explosive boats. Saudi officials called the Houthis the first nonstate armed group with this combination, while noting that Hezbollah and Iranian militias also possess similar weapons. Iran and the Houthis deny the reported assistance.