The British Attorney General at the time of the invasion of Iraq says intelligence then did not prove Iraq was an imminent threat, so the invasion could not be justified on the grounds of self-defence.
Giving evidence to an official inquiry in London, Lord Goldsmith said his initial instinct was that a second United Nations resolution would be needed to make military action legal.
He added that his advice was not welcomed by the then British Prime Minister Tony Blair.
However, he went on to say that he later came to believe the invasion was legal, and changed his advice accordingly.
