Economaniac at DailyKos
, speculates that there may be a connection discovered in the reporters' testimonies:
What did they tell Fitzgerald's investigators? What was their Grand Jury testimony. Bet it was pretty hard to come up with a consistent story that wasn't a political disaster. How many lied?
What started as a potential case of intentionally leaking the identity of an agent has now become about perjury and obstruction of justice in an attempt to conceal White House involvement in fixing the intelligence that led to war. Cooper and Miller were all over the prewar intelligence beat, so they become keys to understanding how the White House went from propagandists fighting CIA skeptics over WMD to triumphal victors haranguing their doubters to well meaning victims of bad intelligence. The Plame disclosure happened right in the middle of the transformation, which means that it draws attention to both the WH role in the fixing of intelligence and its efforts to deny that role.
Fitzgerald needs the reporters to contradict whatever whitewash the WH has come up with for this mess. Its not just the identity of the source, it is what the WH was saying and when that will show that they lied to Fitzgerald and the Grand Jury to cover up their manipulation of and lying about prewar intelligence. This is what happens when the administration's Orwellian alteration of history occurs in a venue where lying is a crime and providing talking points is conspiracy to obstruct justice.