Former Yemeni president
Ali Abdullah Saleh had accused the Houthis of having ties to external backers, in particular the Iranian government; Saleh stated in an interview with
The New York Times,The real reason they received unofficial support from Iran was because they repeat same slogan that is raised by Iran – death to America, death to Israel. We have another source for such accusations. The Iranian media repeats statements of support for these [Houthi] elements. They are all trying to take revenge against the USA on Yemeni territories. Such backing has been reported by diplomatic correspondents of major news outlets (e.g., Patrick Wintour of
The Guardian), and has been the reported perspective of Yemeni governmental leaders militarily and politically opposing Houthi efforts (e.g., as of 2017, the UN-recognized, deposed Yemeni President Abd Rabbu Mansour Hadi, who referred to the "Houthi rebels... as 'Iranian militias'". The Houthis in turn accused the Saleh government of being backed by Saudi Arabia and of using
Al-Qaeda to repress them. Under the next President Hadi, Gulf Arab states accused Iran of backing the Houthis financially and militarily, though Iran denied this, and they were themselves backers of President Hadi. Despite confirming statements by Iranian and Yemeni officials in regards to Iranian support in the form of trainers, weaponry, and money, the Houthis denied reception of substantial financial or arm support from Iran.
Joost Hiltermann of
Foreign Policy wrote that whatever little material support the Houthis may have received from Iran, the intelligence and military support by US and UK for the
Saudi Arabian-led coalition exceed that by many factors. In April 2015, the
United States National Security Council spokesperson
Bernadette Meehan remarked that "It remains our assessment that Iran does not exert command and control over the Houthis in Yemen".
Joost Hiltermann wrote that Iran does not control the Houthis' decision-making as evidenced by Houthis' flat rejection of Iran's demand not to take over Sanaa in 2015. Similarly, academics such as Marieke Brandt and Charles Schmitz have stated that the allegation that the Houthis are merely an Iranian proxy force has its roots in political narratives by Saleh, Saudi Arabia, the United States and other anti-Houthi forces. On the edition of 8 April 2015 of
PBS Newshour,
Secretary of State John Kerry stated that the US knew Iran was providing military support to the Houthi rebels in Yemen, adding that Washington "is not going to stand by while the region is destabilised". Phillip Smyth of the
Washington Institute for Near East Policy told
Business Insider that Iran views Shia groups in the Middle East as "integral elements to the Islamic Revolutionary Guard Corps (IRGC)". Smyth claimed that there is a strong bond between Iran and the Houthi uprising working to overthrow the government in Yemen. According to Smyth, in many cases Houthi leaders go to Iran for ideological and religious education, and Iranian and Hezbollah leaders have been spotted on the ground advising the Houthi troops, and these Iranian advisers are likely responsible for training the Houthis to use the type of sophisticated guided missiles fired at the US Navy. To some commentators (e.g., Alex Lockie of
Business Insider), Iran's support for the revolt in Yemen is "a good way to bleed the Saudis", a recognized regional and ideological rival of Iran. Essentially, from that perspective, Iran is backing the Houthis to fight against a Saudi-led coalition of Gulf States whose aim is to maintain control of Yemen. In early 2013, photographs released by the Yemeni government show the United States Navy and Yemen's security forces seizing a class of "either modern Chinese- or Iranian-made" shoulder-fired, heat-seeking anti-aircraft missiles "in their standard packaging", missiles "not publicly known to have been out of state control", raising concerns of Iran's arming of the rebels. In April 2016, the U.S. Navy intercepted a large Iranian arms shipment, seizing thousands of AK-47 rifles, rocket-propelled grenade launchers, and 0.50-caliber machine guns, a shipment described as likely headed to Yemen by the Pentagon. Based on 2019 reporting from
The Jerusalem Post, the Houthis have also repeatedly used a drone nearly identical to
Iran Aircraft Manufacturing Industrial Company's
Ababil-T drone in strikes against Saudi Arabia. In late October 2023, Israel stated that it had intercepted a "surface-to-surface long-range ballistic missile and two cruise missiles that were fired by the Houthi rebels in Yemen"; per reporting from
Axios.com, this "was Israel's first-ever operational use of the
Arrow system for intercepting ballistic missiles since the war began". The continuing interceptions and seizures of weapons at sea, attributed to Iranian origins, is a matter tracked by the
United States Institute of Peace.
Iranian IRGC involvement In 2013, an Iranian vessel was seized and discovered to be carrying
Katyusha rockets, heat-seeking
surface-to-air missiles, RPG-7s, Iranian-made night vision goggles and artillery systems that track land and navy targets 40km away. That was en route to the Houthis. In March 2017,
Qasem Soleimani, head of Iran's
Quds Force, met with Iran's
Islamic Revolutionary Guard Corps (IRGC) regarding the "newly accelerated effort to empower the Houthis", including the provision of weapons and training. Soleimani was quoted as saying, "At this meeting, they agreed to increase the amount of help, through training, arms and financial support." Despite the Iranian government, and Houthis both officially denying Iranian support for the group. Brigadier General
Ahmad Asiri, the spokesman of the Saudi-led coalition told
Reuters that evidence of Iranian support was manifested in the Houthi use of
Kornet anti-tank guided missiles which had never been in use with the
Yemeni military or with the Houthis and that the arrival of Kornet missiles had only come at a later time. In the same month the IRGC had altered the routes used in transporting equipment to the Houthis by spreading out shipments to smaller vessels in Kuwaiti territorial waters in order to avoid naval patrols in the
Gulf of Oman due to sanctions imposed, shipments reportedly included parts of missiles, launchers, and drugs. In May 2018, the United States imposed sanctions on Iran's IRGC, which was also listed as a
designated terrorist organization by the US over its role in providing support for the Houthis, including help with manufacturing
ballistic missiles used in attacks targeting cities and oil fields in Saudi Arabia. In August 2018, despite previous Iranian denial of military support for the Houthis, IRGC commander
Nasser Shabani was quoted by the Iranian
Fars News Agency as saying, "We (IRGC) told Yemenis [Houthi rebels] to strike two Saudi oil tankers, and they did it", on 7 August 2018. In response to Shabani's account, the IRGC released a statement saying that the quote was a "Western lie" and that Shabani was a retired commander, despite no actual reports of his retirement after 37 years in the IRGC, and media linked to the Iranian government confirming he was still enlisted with the IRGC. Furthermore, while the Houthis and the Iranian government have previously denied any military affiliation, In 2024, commanders from IRGC and Hezbollah were reported to be actively involved on the ground in Yemen, overseeing and directing
Houthi attacks on Red Sea shipping, according to a report by Reuters. In 2024, July United States targeted new sanctions focusing on IRGC ties with the group. The Houthis dismissed the sanctions as pathetic and powerless. In 2024, Israel also placed sanctions on the Houthis.
North Korean involvement In August 2018,
Reuters reported that a confidential United Nations investigation had found the North Korean government had failed to discontinue its nuclear and missile delivery programs, and in conjunction, was "cooperating militarily with Syria" and was "trying to sell weapons to Yemen's Houthis". In August 2019, the South Korean
National Intelligence Service had tracked the Scuds missiles (used to attack Saudi Arabia) back to North Korea. In January 2024, South Korea's
Yonhap News Agency reported that North Korea had evidently shipped weapons to Houthis via Iran, based on the writings in
Hangul script that were found on missiles launched towards Israel. North Korea considers the Houthis as a "resistance force". In March 2025, after the
airstrikes by the US Air Force commenced, North Korean Ambassador to Egypt, Ma Dong-hee, who is also accredited to Yemen, condemned the attacks on the Houthis as a threat to regional and global order.
Russian involvement It was noted by
Newsweek in July 2024 that the Houthis were in possession of Russian-made
P-800 Oniks missiles, and that the transfer had likely occurred via Syria and Iran. In July 2024,
The Wall Street Journal reported that US officials saw increasing indications that Russia was considering arming the Houthis with advanced anti-ship missiles via Iranian smuggling routes in response to
US support for Ukraine during
Russia's invasion. However, it did not follow through due to pushback by the US and Saudi Arabia. In August 2024,
Middle East Eye, citing a US official, reported that personnel of Russia's
GRU were stationed in Houthi-controlled parts of Yemen to assist the militia's attacks on merchant ships. In October,
The Wall Street Journal reported that Russia was supplying the Houthis with
geospatial intelligence to target Western ships.
Chinese involvement Two China based companies were sanctioned by America in 2024 for providing "dual-use materials and components needed to manufacture, maintain, and deploy an arsenal of advanced missiles and unmanned aerial vehicles (UAVs) against U.S. and allied interests." A report by the
Foundation for Defense of Democracies stated that the Houthis were using weapons made in China for their attacks on shipping in the Red Sea in exchange for Chinese ships having safe passage through the Sea. Another report from Israel's i24 News stated that China provided the Houthis with "advanced components and guidance equipment" for their missiles. The
Institute for the Study of War reported that the Houthis supplement their weaponry through additional arms and dual use components sourced from Russia or China. For example, Yemeni border customs seized 800 Chinese-made drone propellers in a shipment bound for the Houthis, and in August 2024 had also purchased Hydrogen Fuel Cylinders from Chinese suppliers which aimed to increase the range and payloads of the Houthis' drones. According to
The Wall Street Journal, the Houthis sent a group from
Saada to Beijing to study Mandarin and manage the supply of drones and missile guidance systems from China and Hong Kong to Yemen. According to the
United States Department of State, Chinese state-owned
Chang Guang Satellite Technology Corporation has provided
geospatial intelligence to the Houthis to target U.S. warships in the Red Sea.
Salafi Jihadist involvement In 2024 a UN report states that
Al-Shabaab and Houthis had a relationship that was "transactional or opportunistic, and not ideological", while a 2025 report states that their relationship was deepening and posed a threat to regional security. According to the
Africa Center for Strategic Studies, al Shabaab is provided with weapons and training while also receiving assistance in expanding the criminal enterprises that fund their operations. While the Houthis benefit by expanding their influence, strengthening Anti-American forces in the region, and weakening pro-American forces in the region. Additionally both sides assist each other in smuggling operations.
Al Qaeda Arabia Province (AQAP) and Houthis had previously fought, but since 2022 they have had a ceasefire. As part of this ceasefire they have cooperated in attacks against Yemeni government, provided safe havens for each other in their territories, and cooperating in security and intelligence. == Human rights violations ==