Spy vs spyBy Marc Erikson During the 1974 US Senate Watergate hearings that led to the resignation of president Richard Nixon, Tennessee Republican senator Howard Baker (later, the US ambassador to Japan) famously asked witnesses time and again, "What did the president know, and when did he know it?" Will another senator soon be asking what President George W Bush and top officials of his administration knew (and when) about Iraq's alleged possession of weapons of mass destruction (WMD)? I doubt it. The Bush administration has now conceded that one key intelligence element to justify war on Iraq, alleged uranium purchases...