[Howlin]

I don't understand why Clarke would leak Plame's identity unless he was just trying to show how much he knows to a reporter

Clarke didn't get the job he wanted in January of 2003; the "leak" came in the summer of 2003; from all accounts from his friends, he was LIVID that he didn't get that job; IMO, that's when he started amassing "evidence" against Bush and not Clinton.

[Miss Marple]

I agree. I also think one of the reasons he didn't get that job was because it had become evident to them that he leaked information.

[ex 98C MI Dude]

I hope it was Plame that wrote the PDB from Aug 6.

It would show that she was indeed riding a desk at the time, and no longer in the field, and therefore could not be outed as an active field agent.

As far as whether or not it was Clarke that gave Novack her name, well, I'd LOVE to know!