18 October 2002 In 1979, the same year the US lost Iran and its oilfields to the Islamic revolution, Saddam Hussein was sworn in as president of Iraq. Twenty-three years later, the US appears poised to engage in another Mideast adventure designed to topple him. But there are a huge number of unknowns, all or any of which could turn the mission into a debacle. For Western diplomats, one of…