So when the debates started about Al Qaeda getting weapons, Plame was the person who kept saying not only that it wasn't happening, but it wasn't likely to happen. Also, there was zero evidence from her sources Saddam could pass such weapons if he wanted to. She'd come back from a business trip, do a brief at Langley and say "it's not happening" Cheney's people sit in occasionally and like neither her tone nor conclusions. Despite the myth, there are plenty of NPR-listening liberals at CIA.

They press and press and her answers never change. It's not happening.

So they finally decide to ignore her, and go about with their lies. She writes a report calling them off-base and goes off to raise her twins. Months later, she's now riding a desk, and doing her job, and someone asks for someone to check this yellowcake thing. She says her husband used to cover the region for the NSC. They check on him, he's got sterling references from EUCOM and is seen as military-friendly. They send him to Niger, he concludes there's nothing to the story.

More months pass. Wilson comes out, saying that the uranium story was crap. The people in the VP's office then put two and two together. Not only is Wilson messing with them, but that bitch Plame is his wife. Let's get them both.

So I think it's not only to teach other people a lesson, but some payback for her honest conclusions.

Sounds very possible to me, given what we know about the way the Bush White House operates, and their feelings about "disloyalty."