After the Bay of Pigs disaster when the CIA tried to invade Cuba and failed, President John F. Kennedy took personal responsibility and ordered an independent investigation.
In fact, the incompetent invasion had been planned during the Eisenhower administration, so JFK easily could have blamed the mess on his predecessor.
After the Pearl Harbor attack, Franklin Roosevelt established an investigative commission chaired by Justice Owen D. Roberts, a Republican Supreme Court member who had been the prosecutor for the notorious Teapot Dome scandal.
The War on Terror is not a war. It's a rhetorical device. If a nation at war can survive an independent inquiry into Pearl Harbour in the face of World War II it can probably survive an inquiry into 11 September or the missing WMDs. All 3 coalition nations now face mounting pressure for inquiries.
John Howard raised the beginning of a defence last night - we believed what we were told. George Bush and Tony Blair do not have a similar defence available. It's high time all 3 leaders started accepting responsibility.