It doesn't amaze me. Why should he waste his time talking to a pack of cheats and liars? If they (Iranians) want to seriously negotiate, they know what they have to do.
What does amaze me is the number of people who seem to think that continuing to talk under the present circumstances is going to lead us anywhere except to a nuclear armed Iran.
And what are we going to offer the Iranians that those weak-kneed Europeans haven't already offered? If John Kerry was in the White House, I'm sure every American couple would have to give their first born over to the Iranians in exchange for a verbal promise to think about stopping their nuclear program. But he's not. So let the MEN handle this.