The man who was Britain's Defence Secretary during the 2003 invasion of Iraq, says he's not comfortable with some of the criticism in the Chilcot Report.

It concluded that not all the peaceful options were explored before going to war.

It also found the British Ministry of Defence didn't respond quickly enough to the threat from improvised explosive devices used by insurgents.

Ex-Defence Secretary Geoff Hoon, says he's asked himself if he could've done something different: