New York Times - Saddam, the Bomb and Me, by Mahdi Obeidi

By 1998, when Saddam Hussein evicted the weapons inspectors from Iraq, all that was left was the dangerous knowledge of hundreds of scientists and the blueprints and prototype parts for the centrifuge, which I had buried under a tree in my garden.

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Was Iraq a potential threat to the United States and the world? Threat is always a matter of perception, but our nuclear program could have been reinstituted at the snap of Saddam Hussein's fingers. The sanctions and the lucrative oil-for-food program had served as powerful deterrents, but world events - like Iran's current efforts to step up its nuclear ambitions - might well have changed the situation.

Iraqi scientists had the knowledge and the designs needed to jumpstart the program if necessary. And there is no question that we could have done so very quickly. In the late 1980's, we put together the most efficient covert nuclear program the world has ever seen. In about three years, we gained the ability to enrich uranium and nearly become a nuclear threat; we built an effective centrifuge from scratch, even though we started with no knowledge of centrifuge technology. Had Saddam Hussein ordered it and the world looked the other way, we might have shaved months if not years off our previous efforts.

So what now? The dictator may be gone, but that doesn't mean the nuclear problem is behind us. Even under the watchful eyes of Saddam Hussein's security services, there were worries that our scientists might escape to other countries or sell their knowledge to the highest bidder. This expertise is even more valuable today, with nuclear technology ever more available on the black market and a proliferation of peaceful energy programs around the globe that use equipment easily converted to military use.

Hundreds of my former staff members and fellow scientists possess knowledge that could be useful to a rogue nation eager for a covert nuclear weapons program.

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Mahdi Obeidi is the author of "The Bomb in My Garden: The Secrets of Saddam's Nuclear Mastermind."