Sir John Chilcot gave a damning indictment of former prime minister Tony Blair's decision to go to war with Iraq today.
In a speech at the Queen Elizabeth II conference centre, Chilcot said: "We have concluded that the UK chose to join the invasion of Iraq before the peaceful options for disarmament had been exhausted. Military action at that time was not a last resort."
At the unveiling of his report, seven years after work started, Chilcot said policy on Iraq was based on "flawed intelligence and assessments".
He continued: "The circumstances in which it was decided that there was a legal basis for UK military action were far from satisfactory."
The extent to which Tony Blair and former President of the United States George Bush worked together was also revealed.
Before the report came out, critics of the war worried that the report would be a 'whitewash'.
However, as Chilcot spoke it became clear that the report would instead be a damning indictment of Britain's actions in Iraq.
Twitter users were shocked and surprised that Chilcot was so candid.
The report in its entirety is now available to read online.