Iran 2026: The Third Gulf War

How 47 years of hostility between the United States and Iran became a direct war in February 2026, why Iran's proxy network collapsed before the war began, and how Iran's closure of the Strait of Hormuz disrupted world oil supplies.

1953 to 2026 · 3 parts · 14 lessons · about 2.5 hours

Free for 7 days, cancel anytime. iPhone and Android.

Contemporary photojournalism style image of the Strait of Hormuz at dusk with smoke rising from a struck Iranian facility on the coast and a US carrier strike group in the foreground

Questions this course answers

Three parts, 14 lessons

Part 1 · 1953 to 2026

How We Got Here

Why 47 years of US-Iran hostility became a war in 2026: the 1953 coup, the nuclear crisis, the collapse of Iran's proxy network, and the failed Oman talks. 4 lessons · 35 min
  1. 1

    From the 1953 Coup to 47 Years of Cold War

    US-Iran hostility began with the CIA's 1953 coup against Prime Minister Mosaddegh. In 1979, students seized the same US embassy the coup had been run from.

    8 min
  2. 2

    Iran's Nuclear Program: 20 Years of Crisis

    Iran's nuclear program began as an American gift to the Shah in 1957. A leaked US intelligence report said the June 2025 strikes set it back a few months.

    10 min
  3. 3

    The Axis of Resistance and Its Quiet Collapse

    For 40 years, Hezbollah, Hamas, and the Houthis were meant to make attacking Iran too expensive. From October 2023 to February 2026, the network was gutted.

    9 min
  4. 4

    The Failed Oman Talks

    Iran offered its biggest concessions ever in Oman and Geneva. The US strike was approved by February 25, before the final round of talks began.

    8 min
Part 2 · 2026

The Opening 40 Days (Feb 28 - April 8, 2026)

The war's most violent phase: the strikes that killed Khamenei, over 5,000 Iranian missiles and drones, a closed Strait of Hormuz, and a ceasefire that settled nothing. 6 lessons · 61 min
  1. 5

    Operation Epic Fury: February 28

    At 06:35 UTC on February 28, the United States and Israel struck about 900 targets across Iran in 12 hours. Khamenei was dead within ten minutes.

    10 min
  2. 6

    Israel's War: Roaring Lion and the Home Front

    Israel absorbed 650 ballistic missiles in 40 days. Iron Dome stopped almost none of them, because that is not what Iron Dome is for.

    9 min
  3. 7

    An Empty Throne: Succession Under Fire

    Khamenei's will asked Iran not to appoint his son. The Assembly of Experts met online under bombardment. The IRGC installed Mojtaba Khamenei anyway.

    10 min
  4. 8

    Iran Hits Back: The Gulf Becomes the Target

    Iran fired over 4,000 missiles and drones at the Gulf states, about 2,200 at the UAE alone, to punish them for hosting US and Israeli operations.

    9 min
  5. 9

    The Strait of Hormuz Closed: March 4

    On March 4, Iran closed the strait carrying 20 percent of the world's oil. Brent passed $126 a barrel. No navy on Earth could simply reopen it.

    11 min
  6. 10

    Pakistan's Ceasefire: The Islamabad Talks

    In Islamabad, US Vice President Vance met Iran's parliament speaker, Ghalibaf: the highest-level face-to-face meeting since 1979. Talks failed after 21 hours.

    12 min
Part 3 · 2026

The Wider War

What the war changed for Gulf security, why Iran's proxies failed, why Russia and China sent no troops, and how air defenses ran short of interceptors. 4 lessons · 47 min
  1. 11

    The GCC Exposed

    The GCC was founded in 1981 to contain Iran. In 2026 it tripled its joint force, and Saudi Arabia signed a defense pact with Turkey and Pakistan.

    12 min
  2. 12

    The Proxies' War: What the Axis Did and Didn't Do

    Hezbollah rejoined the war and was crushed in 14 days, and Lebanon banned its military wing. The Houthis mostly stayed out of the fighting.

    12 min
  3. 13

    Russia, China, and the Axis That Wasn't

    Russia made about $760 million a day from the oil spike and China offered to mediate. Neither sent troops. Both sent air-defense missiles only in the summer.

    12 min
  4. 14

    The Missile and Air-Defense War

    Iran fired over 5,000 missiles and drones in 40 days. Air defenses intercepted 80 to 96 percent but burned through decade-long interceptor stocks doing it.

    11 min

Lessons you can finish in one sitting.

Each lesson tells one part of the story and explains why it happened, with maps, images and quotes from the sources. A few questions at the end check that it stuck, and the key facts go into the course's flashcards.

  • 8 to 12 minutes a lesson
  • Three questions after each lesson
  • 112 flashcards for this course
The Iran 2026: The Third Gulf War course in the Orbis app, with its parts and lessons

Start with the 1953 coup.

All 22 courses are included in Orbis. Free for 7 days, cancel anytime.

More courses

All 22 courses →
7 days free cancel anytime
Get the app