Update: 9/29 at 1pm MT:

The White House has denied Karl Rove was behind the leak.

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New reaction to the announcement of a Justice Department probe of the intelligence leak surrounding Joseph Wilson's wife, CIA operative Valerie Plame:

Retired Gen. Wesley Clark, a candidate for the Democratic presidential nomination, said a Justice Department probe would be inadequate. "This is too much for (Attorney General) John Ashcroft," he said. "It strikes right at the heart of our ability to gather intelligence."

Contacted by phone, Wilson said Sunday he thinks it's safe to assume that the CIA would not refer the matter to the Justice Department unless it thought a crime might have been committed. He said if White House officials were to blame, their motives were easy to decipher.

"It's pretty clear to me that, knowing that they could not shut me up because I had already told my story, the purpose for doing this was to intimidate others and keep others from stepping forward," Wilson said.