The three scientists who planned, designed, built and operated Iran's first nuclear reactor at Bushehr died Tuesday night, June 20, when a Rusaero flight from Moscow crashed at Petrozavodsk in northwest Russia. DEBKAfilereveals they were among the 44 passengers killed. Their loss is a blow to Russia's atomic reactor and energy industries because of their expertise in synchronizing different nuclear systems. Some intelligence sources say that Bushehr's amalgam of systems made it vulnerable to the Stuxnet virus two years ago.