Iran and WMD

How long has Iran been working on nukes? Since at least 2000, says the Guardian, reporting from Risen's Bush-bashing book. This story tells of a Keystone-Cop like attempt to derail the Iranian nuke program in 2000 (while Clinton was in office.) Keep this in mind when the Bushies talk about Iran's WMD program and then the usual party organs start up on bashing Bush about it.