The justification given by the Bushmen for the barbaric and illegal invasuion of Iraq was the alleged possession of WMD by Saddam Hussein. Even the CIA appointed Deulfer Report has confirmed what the world knew all along that Iraq did not possess weapons that are in the ABC category. In fact had Iraq possessed such weapons Bush would not have dared to invade the country. Now it will be difficult for Nuclear power states to hold on to their nuclear monopoly, because there is a real incentive for states like Syria, Iran and North Korea to go nuclear as a detterent against the repeat of a lawless invasion like the Iraq fiasco.
There is another aspect as well. After the Iraq invasion, the US and its allies, "the coalition of the willing" as they call themselves ought to have secured the fibbible material and other nuclear related material seized in Iraq. This did not happen. It is now estimated that enough plutonium for around 8 to 10 "dirty bombs" have reached ther grey market. It was easy to destroy a state and civil socity, but it is next to impossible to deal effectively with non state participants in the golbal terror nexus. Bush has made things much easier for them, because the nuclear genie is well and truly out of the bottle.