Trump is marching toward war with Iran. He hasn’t bothered to make clear why | Mohamad Bazzi

The US spent months promoting a false case for the invasion of Iraq. This time, we're in the dark about Washington's goals

In October 2002, George W Bush laid out his case for taking the US to war against Iraq in a half-hour speech televised around the world. Bush warned that Saddam Hussein's regime could attack the US on any given day" with chemical or biological weapons, including anthrax, mustard gas or the nerve agent sarin. He argued Iraq was seeking to acquire nuclear weapons and could develop a bomb in less than a year. And if those warnings weren't enough to terrify the US public, Bush invoked the ultimate fear of an unprovoked nuclear attack: Facing clear evidence of peril, we cannot wait for the final proof - the smoking gun - that could come in the form of a mushroom cloud."

The world soon learned that Bush's rationale for invading Iraq was based on manipulated intelligence and outright lies; the Iraqi regime no longer had any weapons of mass destruction and was not developing them. But the administration's relentless campaign to convince Americans that Saddam was a threat had paid off by generating significant support. As the invasion got under way in March 2003, many polls showed public approval of the war at more than 70%. Bush's own approval rating hovered around a similar high, underscoring that war can boost the popularity of America's commander-in-chief as few other things can.