Chronological list of Iran and Iran-backed proxy attacks on U.S. forces, personnel, or interests (1979–present)
Note: "Iran-backed" includes state-directed actions by Iran and attacks by Hezbollah, Iraqi Shia militias (e.g., Kata'ib Hezbollah, Asa'ib Ahl al-Haq), IRGC-Quds Force-supported groups, and other proxies. Entries list date, location, actor (where known), target, and outcome (casualties/damage). This is a selection of confirmed or widely attributed incidents rather than an exhaustive every-action list.
1979
- Nov 4, 1979 – Tehran, Iran — Actor: Iranian revolutionaries/hostage-takers — Target: U.S. Embassy personnel — Outcome: 52 U.S. diplomats/consular staff held hostage (444 days).
1983
- Apr 18, 1983 – Beirut, Lebanon — Actor: Hezbollah (Iran-backed) — Target: U.S. Embassy bombing — Outcome: 63 killed (17 U.S. nationals among them), extensive damage.
- Sep 20, 1983 – Beirut, Lebanon — Actor: Hezbollah (truck bomb, believed Iran-backed) — Target: U.S. Marine barracks (Beirut) — Outcome: 241 U.S. servicemembers killed (241 U.S. Marines and sailors); large-scale destruction.
1984–1987
- 1980s (multiple dates) – Persian Gulf/Regional waters — Actor: Iran (naval/IRGC) — Target: U.S. Navy and merchant shipping — Outcome: Harassment, skirmishes; notable: 1987–88 tanker war incidents and escort operations (Operation Earnest Will).
1987
- Apr 14, 1988 – Persian Gulf (USS Samuel B. Roberts) — Actor: Iranian mines/forces — Target: USS Samuel B. Roberts — Outcome: Severely damaged by mine; no U.S. fatalities; led to Operation Praying Mantis.
1988
- Apr 18, 1988 – Persian Gulf — Actor: U.S. forces vs Iran (retaliatory) — Target: Iranian naval assets — Outcome: Operation Praying Mantis (U.S. struck Iranian frigates, platforms); included sinking Iranian ships.
1988
- Jul 3, 1988 – Persian Gulf — Actor: Iran — Target: Iran Air Flight 655 (shot down by USS Vincennes) — Outcome: 290 civilians killed (not U.S. personnel) — cited here as a major U.S.–Iran incident though causation is complex.
1992–2000s
- 1990s–2000s (sporadic incidents) — Actor: Iran-backed militant groups — Target: U.S. interests in Lebanon and elsewhere — Outcome: Assassinations, attempted attacks, plotting (various foiled plots and covert operations).
2003–2011 (Iraq post-invasion)
- 2003 onward – Iraq — Actor: Iran/IRGC-Quds Force and Shia militias (e.g., Kata'ib Hezbollah, Asa'ib Ahl al-Haq, Jaish al-Mahdi elements) — Target: U.S. forces and contractors — Outcome: Numerous rocket, mortar, IED, and ambush attacks; hundreds of U.S. military casualties and contractors killed/wounded across 2003–2011.
- Notable: 2004–2008 — Improvised explosive devices (IEDs), indirect fire and mortar attacks attributed to Iran-backed groups killed and wounded many U.S. troops (specific daily incidents numerous).
2007
- Jan 20, 2007 – Karbala, Iraq — Actor: Iran-backed Shia militia — Target: Karbala provincial headquarters (rocket attack) — Outcome: Multiple U.S. contractors and Iraqi officials killed/wounded (estimates vary).
2007–2008
- Multiple dates — Iraq — Actor: Iranian-backed groups — Target: U.S. logistics convoys and bases — Outcome: Persistent attacks causing deaths and injuries to U.S. personnel and contractors.
2008
- Sep 1, 2008 – Baghdad, Iraq — Actor: Iran-backed militia (suspected) — Target: U.S. Embassy convoy/vehicle — Outcome: Attacks and roadside bombs continued to threaten U.S. diplomatic and military traffic.
2009–2011
- Multiple dates — Iraq — Actor: Iran-linked militias — Target: U.S. forces — Outcome: Rocket and indirect-fire attacks on bases; casualties among U.S. troops and contractors.
2011–2014
- 2011–2014 – Iraq and Syria (rise of ISIS) — Actor: Iran and allied militias — Target: U.S. interests sometimes clashed indirectly; Iran primarily fought ISIS but also expanded regional influence — Outcome: Complex interactions including support for anti-ISIS forces; fewer direct attacks on U.S. forces but proxy tensions persisted.
2015–2019 (Yemen, Syria, Iraq, Gulf)
- 2015–present – Yemen — Actor: Iran-backed Houthi rebels — Target: Red Sea and Gulf shipping, including vessels flagged to or carrying U.S. interests; attacks on commercial tankers and missile/drone strikes — Outcome: Damage to vessels; U.S. and coalition naval escorts/strikes responded at times.
- Sep 2016 – Persian Gulf region — Actor: Houthi or Iran-backed groups — Target: Merchant shipping/ports — Outcome: Several reported attacks and seizures of vessels.
- 2017–2019 – Syria/Iraq — Actor: Iran-backed militias — Target: U.S. bases and positions in eastern Syria and Iraq — Outcome: Repeated rocket and IED attacks against U.S. bases; U.S. forces conducted defensive strikes and raids against militia positions.
2018
- Apr 2018 – Syria — Actor: Iran-backed militias/IRGC elements — Target: U.S. positions and allied forces — Outcome: Skirmishes and artillery/rocket exchanges in eastern Syria; U.S. responded with strikes on militia positions.
2019
- Dec 27, 2019 – Iraq (K-1 base, Kirkuk) — Actor: Kata'ib Hezbollah (Iran-backed) — Target: K-1 U.S. coalition base — Outcome: Rocket attack killed one U.S. contractor and wounded several U.S. and Iraqi personnel; prompted U.S. strikes against Kata'ib Hezbollah.
- Dec 29, 2019 – Iraq — Actor: U.S. (retaliatory strikes) — Target: Kata'ib Hezbollah facilities in Iraq and Syria — Outcome: Dozens reportedly killed (militants); escalated tensions.
2020
- Jan 3, 2020 – Baghdad International Airport, Iraq — Actor: IRGC (Qasem Soleimani) killed in U.S. drone strike — Target: Qasem Soleimani (IRGC-QF) and Abu Mahdi al-Muhandis (PMF deputy leader) — Outcome: Both killed; led to Iranian promises of retaliation.
- Jan 8, 2020 – Iraq — Actor: Iran (IRGC) — Target: Two Iraqi bases hosting U.S. troops (Al Asad and Erbil) — Outcome: Iran launched ballistic missiles; no U.S. fatalities; dozens of U.S. service members later diagnosed with traumatic brain injuries.
- Jan 2020 onward — Iraq/Syria — Actor: Iran-backed militias — Target: U.S. bases and logistics — Outcome: Surge in rocket/IED attacks against U.S. personnel and facilities; continued cycles of U.S. strikes and militia responses.
2020–2021
- Mar–Dec 2020 and 2021 — Iraq — Actor: Kata'ib Hezbollah and other Iran-backed groups — Target: U.S. bases and diplomatic facilities (rocket/IED attacks) — Outcome: Multiple injuries and material damage; targeted U.S. contractors and personnel.
2021
- Feb–Dec 2021 — Iraq and Syria — Actor: Iran-backed militias — Target: U.S. bases and partner facilities — Outcome: Numerous indirect-fire and drone attacks; periodic U.S. strikes in response.
2022
- Mar 2022 – Iraq — Actor: Iran-backed militias — Target: Erbil and other northern bases — Outcome: Rocket attacks and attempted strikes against bases hosting U.S. personnel; injuries and damage reported.
- Apr 2022 – Syria — Actor: Iran-backed militias — Target: U.S. outposts in eastern Syria — Outcome: Indirect fire and drone attacks; U.S. carried out defensive strikes.
2023
- Feb–Dec 2023 — Iraq and Syria — Actor: Iran-backed groups including Kata'ib Hezbollah and allied militias — Target: U.S. forces and bases — Outcome: Recurrent rocket, drone, and mortar attacks causing injuries, damaged equipment, and at times requiring medical evacuation; U.S. responses included airstrikes and sanctions against militia leaders.
- Apr 2023 – Iraq — Actor: Iran-backed militia rocket attack — Target: U.S. base or contractor facilities — Outcome: Reported injuries to U.S. personnel (specific incidents varied).
2024
- 2024 (multiple incidents) — Iraq, Syria, Red Sea/Gulf — Actor: Iran-backed militias and Houthi forces — Target: U.S. forces, commercial shipping, and U.S.-linked interests — Outcome: Continued rocket/drone/sea drone attacks on U.S. bases and vessels; U.S. defensive strikes and escorts.
