2006 Iran resumes uranium enrichment at Natanz after negotiations with European and American officials flounder. United States military and intelligence officials propose a top-secret cyberwar program against Iran’s nuclear enrichment program.

2007 The program begins in earnest, eventually known by the code name Olympic Games. A virtual replica of the Natanz plant is built at American national laboratories. The United States joins Israel in developing a sophisticated computer worm.

2008 Centrifuges begin crashing at Natanz, the crown jewel of the Iranian nuclear program. Engineers at the plant have no clue that the facility is under attack. The initial breakdowns are designed to seem like small random accidents, with code variations that prompt different breakdowns.