LONDON: Britain's decision to go to war in Iraq was a failure born of flawed intelligence, lack of foresight and “wholly inadequate” planning, an official inquiry concluded Wednesday in a report seven years in the making.

The decision in 2003 had a “far from satisfactory” legal basis and ex-Prime Minister Tony Blair's case for military action was over-hyped.

The intelligence about Iraq's alleged weapons of mass destruction which Blair used to justify joining the US-led invasion, which led to the removal of Saddam Hussein and the deaths of 179 British soldiers, was flawed but went unchallenged, inquiry chairman John Chilcot said.

There was no imminent threat from Saddam in March 2003 and the chaos in Iraq and the region which followed should also have been foreseen, he added.

“The inquiry has not expressed a view on whether military action was legal,” Chilcot told reporters and relatives of some of the soldiers killed in Iraq.

“We have, however, concluded that the circumstances in which it was decided that there was a legal basis for military action were far from satisfactory.”

Blair's statement to parliament in 2002 about the risk posed by Iraq's alleged weapons of mass destruction and an intelligence dossier to the public that accompanied it were presented with a “certainty that was not justified”, he said.

Chilcot outlined a catalogue of failures made in the run-up to and aftermath of the war.

He said days before the invasion, Blair had been asked by the government's top lawyer to confirm Iraq had committed breaches of a United Nations Security Council resolution, which would justify war.

Blair said such breaches had been committed but Chilcot said: “The precise basis on which Mr Blair made that decision is not clear.” He also said Blair changed his case for war from focusing on Iraq's “vast stocks” of illegal weapons to Saddam having the intent to obtain such weapons and being in breach of UN resolutions.

“That was not, however, the explanation for military action he had given before the conflict,” Chilcot said.

Blair says world 'better and safer' after Iraq war

Former British prime minister Tony Blair on Wednesday defended his decision to take Britain to war in Iraq in 2003 despite a damning report on the conflict.

“I believe we made the right decision and the world is better and safer,” Blair said at a lengthy press conference following the Chilcot inquiry report.