The Invisible Army: How Iran Built the World's Most Effective Proxy Network

Iran operates armed groups across at least four countries. The Islamic Revolutionary Guard Corps' Quds Force has built this architecture over four decades. Some of these groups are direct proxies under Iranian operational command. Others are influenced allies that cooperate with Tehran but retain significant autonomy. The killing of Qasem Soleimani in January 2020 was supposed to fracture the system. Six years later, the network is operational across more theaters than before his death.

This is a structural map. What follows separates confirmed facts from assessments, direct control from influence, and documented evidence from widely circulated claims that lack sourcing.

The Command Structure: IRGC Quds Force as Central Node

Iran maintains two parallel military organizations. The regular armed forces, known as the Artesh, handle conventional defense. The Islamic Revolutionary Guard Corps handles everything else, and within the IRGC, the Quds Force operates as the extraterritorial branch responsible for Iran's proxy network.

The Quds Force was formally established in 1988, near the end of the Iran-Iraq War, as a specialized unit for operations beyond Iran's borders. Its chain of command runs directly to the Supreme Leader, Ali Khamenei. It does not answer to the Iranian president, the defense minister, or the regular military hierarchy. This constitutional structure matters for any diplomatic analysis: when Western leaders negotiate with Iran's president, they are talking to someone who does not control the proxy apparatus.

Estimates of Quds Force personnel strength vary widely. The IISS Military Balance put the figure at approximately 5,000, while analysts at RUSI and elsewhere have assessed divisional-strength formations of 17,000 to 21,000 members when including embedded advisors, regional liaison officers, and trainers deployed alongside proxy forces. The discrepancy reflects classification differences in what counts as core Quds Force personnel versus the broader network of operatives working under its direction.

Since January 2020, the Quds Force has been commanded by Esmail Qaani, a career IRGC officer who served for decades in the Afghanistan and Pakistan division before his appointment. Multiple analysts, including assessments by the Crisis Group and the IISS, describe Qaani as more bureaucratic and less charismatic than his predecessor. He does not appear to command the same personal loyalty from proxy leaders that Soleimani had cultivated over two decades of face-to-face relationship building across the region.

Tier One: The Direct Proxies

Two groups operate closest to Iranian command: Hezbollah in Lebanon and the Houthis in Yemen. Both receive weapons, training, funding, and in some cases direct operational guidance from Tehran.

Hezbollah is the original model. Iran's Revolutionary Guard helped create the organization in 1982 during the Lebanese Civil War, and the relationship has deepened over four decades into what the IISS describes as the most integrated state-proxy partnership in the modern Middle East. US officials have estimated that Iran provides approximately 700 million dollars annually to Hezbollah, with some assessments running as high as one billion dollars. The State Department and Treasury Department have both cited figures in this range, though the variation reflects the difficulty of tracking financial flows through sanctions-evasion networks. Western defense analysts estimated Hezbollah's pre-2024 active fighting force at roughly 20,000 full-time fighters with significant reserve capacity, though the Israeli military operations of 2024 inflicted substantial losses that have altered these figures. Hezbollah also functions as a political party and social services provider in Lebanon, which gives it a domestic constituency independent of Iranian patronage.

The Houthi relationship is newer and structurally different. The Houthis are a Yemeni movement rooted in Zaydi Shia grievances that predate Iranian involvement. Tehran began providing meaningful military support after the Saudi-led coalition intervened in Yemen in 2015, and the relationship has intensified steadily since then. UN Panel of Experts reports on Yemen have documented Iranian-origin drones, anti-ship ballistic missiles, and cruise missile components in Houthi possession across multiple reporting periods from 2020 to 2025. Iran acknowledges an advisory relationship with the Houthis but denies direct operational control. The distinction matters: the Houthis have demonstrated both the capacity and the willingness to act independently, though their most sophisticated operations, particularly the Red Sea shipping campaign that produced over 100 incidents against commercial vessels between late 2023 and 2025 according to US CENTCOM data, suggest a level of coordination and capability supply that goes well beyond advice.

Tier Two: The Influenced Allies

Iraq's Popular Mobilization Forces and various Syrian militia groups cooperate with Iran but occupy a different position in the network hierarchy. They share strategic interests with Tehran and receive support, but they pursue their own domestic agendas alongside any Iranian objectives.

The PMF, known in Arabic as Hashd al-Shaabi, presents the most complex case. Formed in 2014 as an umbrella for predominantly Shia militias mobilized to fight the Islamic State, the PMF was formally integrated into Iraq's security forces by Iraqi law in 2016. Its estimated 100,000 to 150,000 fighters span dozens of factions with varying degrees of allegiance to Tehran. The key Iran-aligned factions include Kata'ib Hezbollah, Asa'ib Ahl al-Haq, and the Badr Organization. These groups receive both Iraqi state salaries and Iranian material support, a dual-funding structure documented by the Crisis Group that illustrates how Iran has embedded its influence inside a sovereign state's security institutions without formally controlling that state.

The PMF dynamic has direct consequences for any attempt to contain Iran's proxy network through diplomatic or military pressure. These are Iraqi citizens, on the Iraqi government payroll, operating under Iraqi law, who simultaneously maintain operational links to the IRGC. Sanctioning them means sanctioning elements of the Iraqi state.

In Syria, the picture is more straightforward in one sense: many militias were recruited, trained, and deployed by the Quds Force specifically for the Syrian civil war. Groups like the Afghan Shia Liwa Fatemiyoun and Pakistani Liwa Zainebiyoun were organized by the IRGC to provide manpower for the Assad regime. Syrian National Defense Force units received IRGC training and coordination. These groups are closer to the direct proxy model, though their operational relevance has declined as the Syrian conflict has shifted from active combat to a frozen stalemate in some areas.

The Money Pipeline: How Iran Funds the Network Under Sanctions

Precise figures on Iran's proxy spending do not exist. The Iranian defense budget does not itemize proxy support, and the financial flows deliberately exploit opacity. What is available are estimates and documented transfer mechanisms.

The IISS, US State Department, and independent analysts have produced estimates that diverge significantly. The State Department estimated that Iran spent upward of 16 billion dollars on support for the Assad regime and its proxy network between 2012 and 2020. Annualized across all proxy relationships, most analysts converge on a range of roughly one to two billion dollars per year, though some assessments run considerably higher depending on what is counted. The wide variance reflects disagreement about what counts as proxy funding versus bilateral state aid, arms transfers priced at market value versus production cost, and training delivered by regular IRGC versus Quds Force personnel.

The documented mechanisms for moving money are better understood than the total amounts. Iran uses ship-to-ship oil transfers at sea to sell crude outside sanctions monitoring. Front companies, particularly in the UAE, Turkey, and East Asia, process payments. The US Treasury's Office of Foreign Assets Control has designated hundreds of entities connected to these financial networks, and each designation provides a documented snapshot of a specific transfer route. Iran has also experimented with cryptocurrency transactions, though the scale of this channel relative to traditional methods remains unclear.

Several proxies have developed their own revenue streams, which makes them partially self-financing. Hezbollah operates financial networks across West Africa, Latin America, and Southeast Asia that the DEA and US Treasury have investigated for years. Houthis generate revenue from customs duties, taxation, and resource extraction in territory they control in Yemen. This partial financial independence makes the proxies simultaneously more autonomous from Tehran and harder for sanctions to reach.

The Arms Pipeline: From Iranian Factories to Proxy Arsenals

Iran has built a domestic arms production capacity specifically designed for proxy supply. The centerpiece of this industrial effort is its drone program. Iran produces the Shahed series of one-way attack drones, including the Shahed-136 and Shahed-131, which have been documented in Yemen, Iraq, and most prominently in Russia's war against Ukraine. Defense analysts and open-source researchers have estimated Iran's Shahed-series production capacity at roughly 100 to 200 units per month across multiple facilities, with significant production expansion since 2020.

The supply routes follow geography and alliance. The primary land corridor runs from Iran through Iraq and across Syria into Lebanon, a route the Quds Force secured during the Syrian civil war. This corridor remains Iran's main resupply line to Hezbollah and has been operational, with varying levels of disruption, for over a decade. The IISS and US intelligence assessments identify this as the most significant single logistics route in the network.

The maritime route to Yemen is more contested. The IRGC Navy and Iran's regular navy coordinate transfers to the Houthis, primarily using traditional dhow vessels that blend into commercial fishing traffic. US CENTCOM has published data on multiple maritime seizures of Iranian weapons bound for Yemen, including advanced anti-ship missile components. The UN Panel of Experts on Yemen has traced specific weapons recovered in Yemen back to Iranian production based on serial numbers, component markings, and technical specifications.

Houthi anti-ship ballistic missiles used in Red Sea attacks have been linked by the UN Panel to Iranian design and components, including guidance systems and propulsion units that match Iranian military production patterns. This evidence, documented across multiple Panel reports from 2023 to 2025, represents some of the strongest public sourcing for direct Iranian weapons transfers to a proxy force.

After Soleimani: Did the Network Fracture?

Qasem Soleimani was killed by a US drone strike at Baghdad International Airport on January 3, 2020. He had commanded the Quds Force since 1998 and personally managed relationships with proxy leaders across the region. His killing was the most significant direct US strike against Iran's military leadership in the history of the two countries' confrontation.

The IRGC appointed Esmail Qaani as his successor within hours. Qaani had spent most of his career managing IRGC operations along Iran's eastern border, in Afghanistan and Pakistan, and lacked the deep personal networks in Lebanon, Iraq, Syria, and Yemen that Soleimani had built over two decades.

The prevailing assessment in early 2020, shared by several Western intelligence agencies and think tanks, was that the network would degrade. Soleimani's personal authority had held the system together. Without him, the reasoning went, coordination would falter and proxy groups would drift toward independent action or internal power struggles.

Six years of evidence suggest this assessment was wrong, or at least significantly incomplete. The post-Soleimani period has seen an expansion of proxy activity, not a contraction. The Houthi Red Sea shipping campaign of 2023 to 2025 represents the most sophisticated multi-theater proxy operation in the network's history, involving sustained attacks on commercial shipping across a wide maritime area. PMF-aligned factions launched scores of attacks against US military positions in Iraq and Syria during the October 2023 to February 2024 period alone, with tallies ranging from over 60 in Iraq to more than 160 across both countries depending on the source and counting methodology.

This suggests, as multiple analysts have assessed, that the IRGC invested in institutionalizing coordination rather than relying on Soleimani's personal command style. Communication channels, supply logistics, and strategic planning appear to have been systematized to a degree that the network can function without a single charismatic leader at its center. Whether this makes the network more stable in the long term, or merely more bureaucratic and less adaptive, remains an open question.

What We Don't Know

Several critical aspects of Iran's proxy network remain matters of assessment rather than confirmed intelligence.

No confirmed reporting describes how operational orders flow from Tehran to proxy commands in real time. Whether the Quds Force issues specific tactical instructions for major operations, or provides strategic guidance that proxies translate into their own operational planning, is debated among analysts. The degree of advance Iranian authorization for the Houthi Red Sea campaign is a specific point of disagreement: some analysts believe Iran greenlighted the campaign as part of a coordinated "axis of resistance" response to the Gaza conflict, while others assess that the Houthis escalated beyond what Tehran initially intended.

The distinction between Iranian coordination and post-hoc claiming matters. The Crisis Group has documented cases where PMF factions acted on their own initiative and subsequently framed their actions as aligned with Iranian strategy. This pattern complicates any assessment of how much control Tehran actually exercises over the network's daily operations.

Financial flows are estimated, not precisely measured. The sanctions-evasion infrastructure is designed specifically to avoid documentation, and the figures cited by US, European, and Israeli intelligence represent analytical estimates with acknowledged uncertainty margins. The actual annual cost of the proxy network could be meaningfully higher or lower than the commonly cited ranges.

What Circulates Falsely

Three narratives about Iran's proxy network are widely repeated but either false or significantly misleading.

The first is the "puppet master" frame, which presents Iran as exercising precise operational control over all proxy groups simultaneously, directing attacks from a central command in Tehran. This overstates Iranian control and understates proxy autonomy. The IISS, Crisis Group, and most serious analysts describe a spectrum that runs from high integration (Hezbollah) through substantial influence (Houthis, key PMF factions) to loose alignment (some Syrian militia groups). The spectrum is not a single command chain.

The second is the "Soleimani's death crippled the network" narrative, which had wide circulation in 2020 and 2021. The operational record since then directly contradicts this claim. The network expanded its geographic reach and demonstrated its most complex sustained operation in the Red Sea campaign. Whatever Soleimani's death cost the network in personal relationships and tactical flexibility, it did not produce the strategic degradation that many predicted.

The third is the claim of a unified "axis of resistance" war room where Iran, Hezbollah, the Houthis, and PMF factions coordinate operations in real time across all theaters. This narrative gained traction after October 2023 when multiple Iranian proxies escalated simultaneously. While strategic alignment and some coordination clearly exist, no confirmed intelligence supports the existence of a single integrated command center. The simultaneous escalation likely reflects shared strategic objectives and pre-established response triggers rather than centralized real-time command.

A fourth distinction often lost in reporting is the difference between Iranian state policy and IRGC autonomous action. The Iranian government and the IRGC do not always agree. The presidency and foreign ministry may pursue diplomatic engagement while the Quds Force continues or escalates proxy operations. This is not necessarily a contradiction or deception; it reflects the institutional fragmentation of Iranian power that the country's constitution deliberately creates.

The network is operational across four countries. Its weapons supply chain has expanded, particularly in drone and missile technology. Its financial base is partially sanctions-proof because proxies generate their own revenue. Its command structure has survived the loss of its most important individual leader by institutionalizing coordination that previously depended on personal authority. The architecture is not static, and its precise internal dynamics remain partially obscured. But the structural fundamentals are documented, sourced, and clear.