Senior British diplomatic and military staff gave Tony Blair explicit warnings three years ago that the US was disastrously mishandling the occupation of Iraq, according to leaked memos. John Sawers, Mr Blair's envoy in Baghdad in the aftermath of the invasion, sent a series of confidential memos to Downing Street in May and June 2003 cataloguing US failures. With unusual frankness, he described the US postwar administration, led by the retired general Jay Garner, as "an unbelievable mess" and said "Garner and his top team of 60-year-old retired generals" were "well-meaning but out of their depth". That assessment is reinforced...