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| | 3500 BC | Mesopotamia, known as the world's first civilization, developed in South Eastern Iraq | |
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| | 539 BC | Mesopotamia was conquered by the Persians | |
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| | 332 BC | Alexander the Great conquers the Persians | |
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| | 226 AD | The Persian Sassanid dynasty took control of Mesopotamia | |
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| | 126 BC | The Greek rule ended when the Parthians established control of Iraq | |
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| | 633AD | Arab Muslims conquer the Sassanids and Iraq | |
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| | 750 | The Abbasids conquer the Islamic world. Baghdad was founded as the capital | |
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| | 1258 | Mesopatamia and its capital Baghdad falls to Mongol invaders led by the grandson of Genghis Khan. The Arab Empire was destroyed | |
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| | 1500s | The Ottoman Empire conquers the region | |
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| | 1700s | The Ottoman power in Mesopotamia begins to decline | |
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| | 1800s | Great Britain becomes involved with Mesapotamia needing to protect their trade routes with India and the East | |
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| | 1914 | 1914-1918 World War I | |
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| | 1917 | British troops occupy Baghdad | |
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| | 1920 | The League of Nations give Great Britain a mandate to rule over Mesopotamia | |
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| | 1920 | The San Remo Peace Conference of Allied Powers. Mesopotamia is renamed Iraq | |
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| | 1921 | The British set up King Faisal I as the monarch and control the government | |
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| | 1925 | The League of Nations sets the border between Turkey and Iraq which places the Mosul region in Iraq rather than Turkey against the wishes of the Kurdish population | |
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| | 1932 | Iraq become independent | |
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| | 1937 | April 28 - Saddam Hussein was born | |
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| | 1939 | 1939-1945 World War 2 breaks out | |
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| | 1940 | 1940-1941 The Iraqi government allies with Germany, Italy and Japan seeking to rid Iraq of British power and influence | |
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| | 1941 | Great Britain defeat Iraq | |
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| | 1945 | End of 1939-1945 World War 2 and Iraq helps to form the Arab League | |
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| | 1948 | The Arab League declares war against the newly formed Israel | |
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| | 1950 | 1950-1952 Iraq signs agreements with foreign oil companies and receives 50% of the oil profits | |
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| | 1953 | Faisal II became king of Iraq | |
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| | 1950s | Many Iraqis began to oppose the monarchy. They wanted a say in the government | |
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| | 1955 | Iraq signed the Baghdad Pact with Iran, Pakistan, and Turkey | |
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| | 1958 | Iraq becomes a republic during a military coup and the monarchy is killed | |
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| | 1972 | Treaty of Friendship and Cooperation signed between Iraq and the Soviet Union. The country nationalises the Iraq Petroleum Company (IPC) | |
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| | 1975 | Iraq and Iran sign a treaty ending border disputes | |
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| | 1979 | Saddam Hussein succeeds Al-Bakr as Iraqi President | |
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| | 1980 | 4 September: Iraq invades Iran starting the Iran-Iraq war | |
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| | 1981 | 7 June: Israel attacks an Iraqi nuclear research centre at Tuwaythah near Baghdad. | |
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| | 1988 | 16 March: Chemical attack on Kurds Iraq believed to have used chemical weapons against the Kurdish town of Halabjah | |
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| | 1990 | 2 August: Iraq invades Kuwait United Nations Security Council imposes economic sanctions on Iraq 8 August: Iraq announces the merger of Iraq and Kuwait | |
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| | 1991 | 17 January: A coalition of 39 countries begin bombing Iraq starting the Persian Gulf War The aerial bombing of Iraq is called "Operation Desert Storm" 27 February: The liberation of Kuwait 3 March - Iraq accepts the terms of a ceasefire | |
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| | 1992 | 26 August: A no-fly zone banning Iraqi planes set up in southern Iraq | |
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| | 1993 | 27 June - US launch cruise missile attack on Iraqi intelligence headquarters in Baghdad | |
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| | 1994 | 29 May - Saddam Hussein becomes prime minister of Iraq | |
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| | 1995 | 14 April - UNSC agree to allow the partial resumption of oil exports to buy food and medicine called the "oil-for-food programme" - implemented December 1996 | |
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| | 1995 | 15 October - Referendum allows Saddam Hussein to remain president for another seven years. | |
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| | 1996 | 31 August: Iraqi forces launch offensive into northern no-fly zone and capture Irbil. 3 September: US extends northern limit of no-fly zone to latitude to the south of Baghdad. | |
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| | 1998 | 31 October - Iraq ends cooperation with UN Special Commission to Oversee the Destruction of Iraq's Weapons of Mass Destruction (Unscom). 16-19 December: Operation Desert Fox - US and UK forces launch a bombing campaign, to destroy Iraq's nuclear, chemical and biological weapons programmes | |
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| | 2002 | September: Weapons inspectors return | |
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| | 2003 | 17 March Saddam Hussein given 48 hours to leave Iraq or face war 20 March: American missiles hit targets in Baghdad and US and British ground troops enter Iraq 9 April 2003: Baghdad and the power of Saddam Hussein crumbles and the US lists 55 most-wanted members of former regime which is issued as packs of cards July: Saddam's sons Uday and Qusay killed in gun battle in Mosul 14 December: Saddam Hussein captured in Tikrit. | |
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| | 2004 | Fighting continues US hands sovereignty to interim government headed by Prime Minister Iyad Allawi Saddam Hussein transferred to Iraqi legal custody | |
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| | 2005 | Elections: The Shia United Iraqi Alliance win a majority Parliament appoints the Kurdish leader Jalal Talabani as president and Ibrahim Jaafari, a Shia, is named as prime minister October: Saddam Hussein goes on trial | |
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| | 2006 | 7 June: The Al-Qaeda leader in Iraq, Abu Musab al-Zarqawi, is killed | |
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