Britain joined the 2003 US-led invasion of Iraq before exhausting peaceful options and with a "certainty that was not justified," an inquiry based on intelligence evidence concludes.
Former prime minister Tony Blair and other British officials have come under fire for allegedly misleading the public and parliament over the intelligence behind the decision to take part in the Iraq invasion.
"We have concluded that the UK chose to join the invasion of Iraq before the peaceful options for disarmament had been exhausted," says John Chilcot, the lead author of the inquiry report.
"Military action at that time was not a last resort," Chilcot says.
"The judgements about the severity of the threat posed by Iraq's weapons of mass destruction - WMD - were presented with a certainty that was not justified."