Is this an opinion piece or reporting? I can't decide

This is the opening paragraphs of this article:

Now that Karl Rove won't be indicted, now that the president won't fire him, now that it really doesn't matter anymore, more details of the Valerie Plame leak investigation trickle out.

In his latest syndicated column released Wednesday, columnist Robert Novak revealed his side of the story in the Plame affair, saying Rove was a confirming source for Novak's story outing the CIA officer, underscoring Rove's role in a leak President Bush once promised to punish.

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