On Page 4 on the Libby indictment (.pdf), Fitzgerald explains the following:
On or about May 29, 2003, in the White House, Libby asked an Under Secretary of State (“Under Secretary”) for information concerning the unnamed ambassador’s travel to Niger to investigate claims about Iraqi efforts to acquire uranium yellowcake. The Under Secretary thereafter directed the State Department’s Bureau of Intelligence and Research to prepare a report concerning the ambassador and his trip. The Under Secretary provided Libby with interim oral reports in late May and early June 2003, and advised Libby that Wilson was the former ambassador who took the trip.
The funny thing is watching television journalists dance around this unnamed Under Secretary of State. They seem to believe it’s John Bolton, they want to say it’s John Bolton, everyone around them wants them to say the words “John Bolton,” but they just aren’t prepared to go there.
It’s hilarious.
Update: Well, as it turns out, it’s a good thing reporters resisted the temptation. The unnamed Under Secretary of State was Marc Grossman.