In Nuclear Net’s Undoing, a Web of Shadowy Deals

The president of Switzerland stepped to a podium in Bern last May and read a statement confirming rumors that had swirled through the capital for months. The government, he acknowledged, had indeed destroyed a huge trove of computer files and other material documenting the business dealings of a family of Swiss engineers suspected of helping smuggle nuclear technology to Libya and Iran.

The files were of particular interest not only to Swiss prosecutors but to international atomic inspectors working to unwind the activities of Abdul Qadeer Khan, the Pakistani bomb pioneer-turned-nuclear black marketeer. The Swiss engineers, Friedrich Tinner and his two sons, were accused of having deep associations with Dr. Khan, acting as middlemen in his dealings with rogue nations seeking nuclear equipment and expertise.

The Swiss president, Pascal Couchepin, took no questions. But he asserted that the files — which included an array of plans for nuclear arms and technologies, among them a highly sophisticated Pakistani bomb design — had been destroyed so that they would never fall into terrorist hands.

Behind that official explanation, though, is a far more intriguing tale of spies, moles and the compromises that governments make in the name of national security. ....