It's been said that if 11 September 2001 was the day the world changed for America, then 20 March 2003 was the day America changed for the world.
Four leading voices of the BBC's coverage in the last five years (Jim Muir; Magdi Abdelhadi; Lyse Doucet and John Simpson) give their varying assessments of how the Iraq invasion and subsequent insurgency developed, charting the missed opportunities and faulty assessments by the Coalition, and the murderous exploitation of Iraq's post-war frailty by Saddam loyalists and foreign Islamists.
We also look at how the ripples begun in the Sunni triangle have since spread globally affecting the political and diplomatic balance worldwide.
In Programme One, BBC correspondent Jim Muir evaluates how war has changed Iraq from the beginning of the invasion to the handover of power.
He looks at political developments - the split between Shia and Sunni Muslims - and conflict with the Kurds and gives his predictions for the future.
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