An anonymous reader writes "Despite the U.S. and Israel being widely assumed to be responsible for Stuxnet, Russia is the more likely culprit, says U.S. Air Force cyber analyst. The nuclear gangsterism of the past 20 years gives it plenty of motive. Quoting: 'So what better way to maintain Russian interests, and innocence, than to plant a worm with digital U.S.-Israeli fingerprints? After all, Russian scientists and engineers are familiar with the cascading centrifuges whose numbers and configuration – and Siemen’s SCADA PLC controller schematics – they have full access to by virtue of designing the plants. ... the observers of the virus could alert the Iranians before full nuclear catastrophe struck. The Belarusian computer security experts who 'discovered' the code seemingly played that role well. They didn't seem too preoccupied with reverse engineering the malicious code to see what it was designed to do.'"