According to this report, Bush was correct regarding the WMD's..
17.09 Chemical weapons produced at the Al Muthanna facility, which Isis today seized, are believed to have included mustard gas, Sarin, Tabun, and VX.
Here is the CIA's file on the complex.
Quote Stockpiles of chemical munitions are still stored there. The most dangerous ones have been declared to the UN and are sealed in bunkers.
Although declared, the bunkers contents have yet to be confirmed.
These areas of the compound pose a hazard to civilians and potential blackmarketers.
Numerous bunkers, including eleven cruciform shaped bunkers were exploited. Some of the bunkers were empty. Some of the bunkers contained large quantitiesof unfilled chemical munitions, conventional munitions, one-ton shipping containers, old disabled production equipment (presumed disabled under UNSCOM supervision), and other hazardous industrial chemicals.
17.05 The Chemical Weapons Convention, which Iraq joined in 2009, requires it to dispose of the material at Al Muthanna, even though it was declared unusable and "does not pose a significant security risk"
However, the UK goverment has acknowledgeded that the nature of the material contained in the two bunkers would make the destruction process difficult and technically challenging.
Under an agreement signed in Baghdad in July 2012, experts from the MODís Defence Science and Technology Laboratory (Dstl) were due to provide training to Iraqi personnel in order to help them to dispose of the chemical munitions and agents.
16.52 The remaining chemical weapons from Saddam Hussein's regime are stored in two sealed bunkers, both located at the Al Muthanna Chemicals Weapons Complex, a large site in the western desert some 80km north west of Baghdad.
This was the principal manufacturing plant for both chemical agents and munitions during Saddam Husseinís rule.
Thousands of tonnes of chemical weapons were produced, stored and deployed by the Saddam Hussein regime. Iraq used these weapons during the Iran - Iraq War (1980 to 1988) and against the Kurds in Halabja in 1988.
16.32 Isis jihadists have seized a chemical weapons facility built by Saddam Hussein which contains a stockpile of old weapons, State Department officials have told the Wall Street Journal:
Quote U.S. officials don't believe the Sunni militants will be able to create a functional chemical weapon from the material. The weapons stockpiled at the Al Muthanna complex are old, contaminated and hard to move, officials said.
Nonetheless, the capture of the chemical-weapon stockpile by the forces of the Islamic State of Iraq and al-Sham, known as ISIS or ISIL, the militant group that is seizing territory in the country, has grabbed the attention of the U.S.
"We remain concerned about the seizure of any military site by the ISIL," Jen Psaki, the State Department spokeswoman, said in a written statement. "We do not believe that the complex contains CW materials of military value and it would be very difficult, if not impossible, to safely move the materials."