..by Reuel Marc Gerecht, in the WSJ's Opinion Journal section. A former CIA case officer, Mr. Gerecht notes that the agency has always been dangerously sloppy in providing cover for its agents overseas. In fact, "The Company" is so bad that most agents are identified within weeks of their arrival, with sometimes deadly consequences for the locals they recruit as spies.
Judging from Gerecht's article, I'd say Valerie Plame's cover was blown long before Robert Novak's infamous column. Read the column, and you'll say that Porter Goss needs an even bigger shovel to muck out the stalls at Langley.