1. They underestimated him. I find this to be highly unlikely, as the guy is well known for his aggresive style and unrelenting resolve.
2. They were unaware of extent of Libby/Rove's role in this matter.
2. They were unaware of extent of Libby/Rove's role in this matter.
I am not at my home computer with the link but if you look at the press conference when Fitzgerald was named you will see that he was told to pursue the facts wherever they may lead. In light of that, I'd add a number 3 to your list...they had an idea where this was leading (Wilson or CIA leaks) and wanted a credible apolitical messenger...(not the Bush DOJ) to deliver the findings.