Karl Rove Source of Matt Cooper's Waiver

From Editor and Publisher:

NEW YORK "A short time ago, in somewhat dramatic fashion, I received an express, personal release from my source," Matt Cooper of Time magazine told a federal judge yesterday, in dramatic fashion, just before being sentenced to jail. "It's with a bit of surprise and no small amount of relief that I will comply with this subpoena."

But who was this source? According to The New York Times today, "Cooper's decision to drop his refusal to testify followed discussions on Wednesday morning among lawyers representing Mr. Cooper and Karl Rove, the senior White House political adviser, according to a person who has been officially briefed on the case."

Rove's lawyer had confirmed over the weekend that his client had turned up as a source in Cooper's documents, which Time turned over to the special prosecutor on Friday, but that did not mean that he was the key source in question.