A report about the United Kingdom's involvement in the Iraq War is released. The chairman of the inquiry, Sir John Chilcot, said that the invasion was not a "last resort" and was based on "flawed intelligence and assessments". The inquiry was announced on 15 June 2009 by then-Prime Minister Gordon Brown. The final hearing was held on 2 February 2011.
A private note, due to remain secret despite calls for it to be published by the chairman of the Iraq Inquiry, shows former British prime minister Tony Blair privately assured former American president George W. Bush "you can count on us" before they jointly invaded Iraq prior to the Iraq War.
Iraq Inquiry documents show former British prime minister Tony Blair was offered an alternative to attacking Iraq during a secret meeting held eight days before its soldiers invaded the country in 2003.
Tony Blair is recalled to give further evidence before the Iraq Inquiry after "gaps" concerning the legality of the Iraq War are identified in his evidence. Jack Straw and Lord Goldsmith are to return too.
Former MI5 head Baroness Manningham-Buller gives evidence in public before the Iraq Inquiry into Iraq's alleged weapons of mass destruction, admitting that the 2003 invasion of Iraq served to "substantially" increase the security threat to the UK.
Lord Jay, Permanent Under-Secretary at the Foreign and Commonwealth Office ahead of the 2003 invasion of Iraq, tells the Iraq Inquiry he felt "very uncomfortable" about Tony Blair declaring war on Iraq without another "necessary" United Nations resolution.