Will we ever know?
As I continue to say, we're not going to know the whole story until we know who forged the Niger documents. Here's Philip Giraldi, a former CIA Officer, writing in American Conservative magazine:
The question remains: who forged the documents? The available evidence suggests that two candidates had access and motive: SISMI and the Pentagon’s Office of Special Plans.Forgeries Made in U.S.A? Wouldn't surprise me a bit.
At this point, any American connection to the actual forgeries remains unsubstantiated, though the OSP at a minimum connived to circumvent established procedures to present the information directly to receptive policy makers in the White House.
The possible forgery of the information by Defense Department employees would explain the viciousness of the attack on Valerie Plame and her husband. Wilson, when he denounced the forgeries in the New York Times in July 2003, turned an issue in which there was little public interest into something much bigger. The investigation continues, but the campaign against this lone detractor suggests that the administration was concerned about something far weightier than his critical op-ed.