John Kerry attacking Vice President Cheney for allegedly lying about pre-war intelligence is about as credible as Ted Kennedy lecturing anyone on drunk driving or the proper way to treat young waitresses.
The Junior Senator from Massachussets launched his political career by slandering the soldiers, sailors, airmen and Marines fighting in Vietnam. When pushed about his testimony before Congress, he has admitted that he didn't really witness any atrocities (as he testified under oath), but heard about such misconduct from other service members who heard about them from others, and so on and so on and so on. We know that the overwhelming majority of troops fighting in Vietnam were the best of their generation -- something that cannot be said of Kerry, even taking into account his military service.
To charge the President and Vice President with lying about intelligence in order to manipulate the Congress and public support to remove Saddam Hussein by force is as immoral as falsely charging one's brothers in arms with war crimes.