There have been linkages between the Iraqi government and al-Qaeda going back more or less a decade.
The purpose of the UN mechanism, this inspection mechanism, is not to engage in a cat and mouse game with Saddam Hussein and try to find weapons that the Iraqi government is working on concealing.
They have involved co-operation between the Iraqi intelligence and al-Qaeda operatives on training and combined operations regarding bomb making and chemical and biological weapons.
The key to making the inspections work is the Iraqi government making the crucial decision that because of the international pressure Iraq has to disarm itself.
What the UN inspectors can do is demonstrate to the world, help the Iraqi government demonstrate to the world that the Iraqis are cooperatively disarming if that is in fact what the Iraqi government decides to do.
The UN inspectors do not have the capability to find hidden weapons in a country the size of Iraq if the Iraqi government is working to conceal them.