Iran since the Islamic Revolution Feb 11, 1979: U.S.- backed Shah’s government falls, 10 days after triumphant return from exile of revolutionary leader Ayatollah Ruhollah Khomeini (above). Islamic Republic is proclaimed on April 1 Nov 4, 1979, hostage crisis: Pro-Khomeini students take 52 Americans hostage at U.S. embassy in Tehran. Hostages held in captivity for 444 days 1980-1988, Iran-Iraq war: Iraq invades Iran. Eight-year war kills estimated 500,000 Iraqi and Iranian troops Oct 1983: Iran-backed Hezbollah bombs U.S. Marine barracks in Beirut, Lebanon, killing 241 service personnel 1989: Pragmatic conservative Akbar Hashemi Rafsanjani becomes president – central figure in reforming regime 1995: U.S. President Bill Clinton imposes total trade and financial embargo on Iran, claiming Tehran backs terrorism Jun 1996: Hezbollah bombs U.S. Air Force housing complex in Dhahran, Saudi Arabia, killing 19 Americans 1999: Political stand-off between reformist President Mohammad Khatami (inset) and conservatives leads to violent protests 2001: Iran and Saudi Arabia sign security pact 2002: U.S. President George W. Bush places Iran on list of “axis of evil” states, with Iraq and North Korea. Washington cites Iran’s sponsorship of terrorism and nuclear weapons programme 2005-2013, Ahmadinejad era: Ultra-conservative Mahmoud Ahmadinejad is elected president. His nuclear brinksmanship triggers crippling UN sanctions 2009: Iran begins backing Yemen’s Houthi rebels with money, training, and arms shipments. Conflict becomes proxy war between Iran and Saudi Arabia 2011: Iran deploys Islamic Revolutionary Guards Corps to Syria to preserve President Bashar al-Assad’s hold on power 2012: Iran-backed Lebanese Hezbollah takes direct combat role in Syria to support Assad regime 2013: U.S. President Barack Obama and newly elected Iranian President Hassan Rouhani (above) speak by telephone – highest-level contact in three decades 2015: Deal with world powers on Iran’s nuclear programme gives Tehran relief from sanctions 2018: U.S. President Donald Trump announces withdrawal from 2015 nuclear deal. Iran continues to develop non-nuclear ballistic missiles ------------------------ Sanaa Ankara TURKEY SYRIA IRAQ JORDAN Beirut LEBANON Cairo EGYPT Dhahran Riyadh SAUDI ARABIA UAE TURKMENISTAN Tehran IRAN CASPIAN RED SEA GULF OMAN YEMEN ARABIAN SEA Extent of Iranian proxy power ----------------------------- Pictures: Associated Press, Getty Images © GRAPHIC NEWS Sources: Brookings, London School of Economics, Understanding War