Iran Interview: The State Department's New Man for Tehran
UPDATE 1420 GMT: An EA correspondent adds:
The resignation of John Limbert was almost entirely because he had only a one-year leave of absence from his faculty position with the US Naval Academy. If he was a bit frustrated, I think it would be more accurate to say that he was in a learning mode for the entire time. He has almost always served overseas and was not familiar with the Washington policy process.
Limbert's expertise on Iran is without parallel, but I was always sceptical that he could translate that into policy actions while swimming with the likes of officials like Dennis Ross and other denizens of the policy deep.
As head of the Northern Gulf desk in the State Department, a lot of Dibble's effort went into Iran. He is no match for Limbert in terms of Iran expertise, but neither is anyone else. Dibble is a bit more of an operator, so the State Department could be trading depth of expertise for policy acumen. There is a question of how long Dibble is slated to be in the post: it is not really clear that anyone can come in temporarily and have a major impact. He does have a really smart and experienced staff.