"Because, the yellow cake thing was a lie,"
Those gullible Canadians, buying 550 metric tons of non-existant yellow cake.
You should learn to fact check a little better:
Tuwaitha and an adjacent research facility were well known for decades as the centerpiece of Saddam's nuclear efforts.
Israeli warplanes bombed a reactor project at the site in 1981. Later, U.N. inspectors documented and safeguarded the yellowcake, which had been stored in aging drums and containers since before the 1991 Gulf War. There was no evidence of any yellowcake dating from after 1991, the official said.
Or, as the New York Times stated more plainly:
The yellowcake removed from Iraq was not the same yellowcake that President Bush claimed, in a now discredited section of his 2003 State of the Union address, that Mr. Hussein was trying to purchase in Africa.
The U.S. did manage to ameliorate a substantial security concern by secretly shipping stored yellowcake out of Iraq in mid-2008, but that act was not, as claimed above, proof that Iraq had been purchasing uranium and attempting to restart its nuclear program prior to the U.S. invasion.
Because you're full of shit.