US-Iran Relations
Historical Trajectory
US-Iran relations have been defined by the 1979 Islamic Revolution and hostage crisis. Iran's seizure of the US Embassy and 52 American hostages (held for 444 days, 1979-81) ended formal diplomatic ties. Subsequent decades saw proxy conflict, US designation of Iran as a state sponsor of terrorism, nuclear proliferation concerns, and economic sanctions. The 2015 JCPOA (Joint Comprehensive Plan of Action) represented a breakthrough — Iran limited its nuclear programme in exchange for sanctions relief — but Trump withdrew from it in 2018 ("maximum pressure" policy), Iran gradually expanded enrichment, and talks under Biden failed to produce a revival agreement.
- 1953 CIA coup: Operation AJAX overthrew elected PM Mohammad Mosaddegh; installed Shah Mohammad Reza Pahlavi; foundational Iranian grievance against the US
- 1979 Revolution: Ayatollah Khomeini's Islamic Republic replaced the Shah; US Embassy hostage crisis
- Iran-Iraq War (1980-88): US backed Saddam Hussein's Iraq against Iran
- JCPOA (2015): Iran capped enrichment at 3.67%, reduced centrifuges, allowed intrusive inspections; in exchange for sanctions relief; P5+1 (USA, UK, France, Russia, China + Germany)
- Trump "maximum pressure" (2018): Withdrew from JCPOA; reimposed comprehensive sanctions; designated IRGC as foreign terrorist organisation
- Uranium enrichment by 2026: Iran had enriched uranium to 60% purity; stockpile far exceeding JCPOA limits
- Iran's proxies: Hezbollah (Lebanon), Hamas (Gaza), Houthis (Yemen), PMF (Iraq) — collectively "Axis of Resistance"
● Tracked since February 24, 2026 · last seen May 06, 2026 · updates as the daily brief publishes