Rep. Porter Goss, Chairman of the House Intelligence Committee said it very clearly on Face the Nation: He said that Iran has shown some cooperation on terrorism, but not enough.

"The trick in Iran is this: The good guys are trying to bring some reform; the bad guys control the levers of power. Sorting the two apart and then isolating the bad guys and taking the levers of power away from them is what’s got to happen. It’s got to happen in a way that does not shut down the reformists or cause repercussions to the reformists. This is hard."