Sixteen years after the United States invaded Iraq and left a trail of destruction and chaos in the country and the region, one aspect of the war remains criminally underexamined: why was it fought in the first place? What did the Bush administration hope to get out of the war?

The official, and widely-accepted, story remains that Washington was motivated by Saddam Hussein’s weapons of mass destruction (WMD) programme. His nuclear capabilities, especially, were deemed sufficiently alarming to incite the war. As then US Secretary of State Condoleezza Rice said, “We do not want the smoking gun to be a mushroom cloud.”

Despite Saddam not having an active WMD programme, this explanation has found support among some International Relations scholars, who say that while the Bush administration was wrong about Saddam’s WMD capabilities, it was sincerely wrong. Intelligence is a complicated, murky enterprise, the argument goes, and given the foreboding shadow of the 9/11 attacks, the US government reasonably, if tragically, misread the evidence on the dangers Saddam posed.

There is a major problem with this thesis: there is no evidence for it, beyond the words of the Bush officials themselves. And since we know the administration was engaged in a widespread campaign of deception and propaganda in the run-up to the Iraq war, there is little reason to believe them.

My investigation into the causes of the war finds that it had little to do with fear of WMDs – or other purported goals, such as a desire to “spread democracy” or satisfy the oil or Israel lobbies. Rather, the Bush administration invaded Iraq for its demonstration effect……more here