The IRGC and the Quds Force: who they are, what they do, why they matter

When American officials talk about Iran’s “regional behavior,” they’re almost never talking about the Iranian foreign ministry. They’re talking about the Islamic Revolutionary Guard Corps. Understanding this organization is the difference between understanding Iran and not understanding Iran.

What the IRGC is

The Islamic Revolutionary Guard Corps was created in 1979, in the chaos of the Iranian Revolution, as a paramilitary force loyal directly to the Supreme Leader rather than to the regular Iranian Army (Artesh). Khomeini didn’t trust the Shah’s military, and the IRGC was meant to be a counterweight to it. Forty-six years later, the IRGC is far more than a counterweight — it is a state within a state.

The IRGC has its own ground forces, navy, air force, intelligence service, and economic empire. Its ground forces are larger than the regular Iranian Army’s and equipped at parity or above. Its navy controls the Persian Gulf and operates the small fast-attack craft that menace tankers. Its aerospace force operates Iran’s ballistic missile inventory.

In economic terms, the IRGC controls or has substantial stakes in major Iranian construction firms, telecoms, oil-services companies, and the parallel-market economy that handles sanctions evasion. Its conglomerate Khatam al-Anbiya is one of the largest contractors in Iran. The IRGC is, by some estimates, responsible for as much as a quarter of Iranian GDP.

What the Quds Force is

The Quds Force (or “Jerusalem Force”) is the IRGC’s external operations arm. It is small — estimates range from 5,000 to 20,000 — but it is the single most important organization in Iranian foreign policy.

The Quds Force does what diplomacy does plus what intelligence services do plus what special operations forces do. It runs Iranian relationships with proxy organizations — Hezbollah in Lebanon, the Popular Mobilization Forces in Iraq, the Houthis in Yemen, multiple Palestinian factions, and various Shia militias across the region. It supplies them with weapons, training, intelligence, and money. It also runs intelligence collection in those countries.

The Quds Force was commanded for 22 years by Qassem Soleimani, killed by a US drone strike near Baghdad airport in January 2020. Soleimani was the closest thing modern Iran had to a celebrity general; his replacement, Esmail Qaani, has kept the structure intact but has been seen as less politically powerful inside the system.

Why this matters for the current cycle

When media coverage talks about “Iran” doing something — a strike on a base in Iraq, a Houthi attack on shipping in the Red Sea, a Hezbollah cross-border action against Israel — the operational reality is almost always the Quds Force coordinating that action. Not the Iranian foreign ministry. Often not even the Iranian president.

This has implications for the policy conversation:

1. Diplomatic engagement with the elected Iranian government often does not bind the IRGC. Reformist presidents have promised one thing; the IRGC has done another. This is not “bad faith” in the conventional sense; it’s that the elected government doesn’t actually control the relevant levers.
2. Sanctions on the IRGC are different from sanctions on Iran. Designating the IRGC as a Foreign Terrorist Organization (which the US did in 2019) targets specific people, accounts, and economic structures rather than the country writ large.
3. A “deal with Iran” needs to be a deal that the Supreme Leader and the IRGC accept, not just a deal that the Iranian foreign ministry signs.

What to watch

The IRGC is led by a small group of generals, several of whom are sanctioned by Treasury OFAC and have been sanctioned for decades. Movements in IRGC leadership — promotions, reshuffles, “retirements” — are far better leading indicators of Iranian behavior than statements from Tehran. Foreign-policy analysts who track the IRGC org chart consistently outpredict those who don’t.

For depth, Ray Takeyh’s Guardians of the Revolution (linked in our recommended reading) remains the best single book on the IRGC’s role in the regime, and Afshon Ostovar’s Vanguard of the Imam is the most rigorous academic treatment of the organization.

If you’re new to Middle East coverage and want one rule for parsing Iran headlines: if it’s an action, it’s the IRGC. If it’s a speech, it might be the foreign ministry. The former is what moves the world. The latter rarely is.