For months, America has deployed the full array of its formidable intelligence network to find Saddam Hussein and his sons. But yesterday's breakthrough came after a simple tip-off from the owner of the house where Saddam's sons were sheltering. At the start of the war, the US tried to "decapitate" the regime by bombing a building in Baghdad where Saddam was believed to be meeting senior lieutenants, but either missed him or the information was faulty. As the military occupation of Iraq has become more established, though, the allies' intelligence has steadily improved. One by one, US forces have rounded...