From Stephen M. Walt’s answer to Bush’s new book, Decision Points. Professor Walt’s response is called Delusion Points.
In the midst of the “Mission Accomplished” euphoria that followed the fall of Baghdad in April 2003, a worried Iran sent a Swiss intermediary to Washington with a far-reaching offer for a “grand bargain,” including an end to Iranian support for groups such as Hezbollah and a deal on Iran’s nuclear energy program. The offer was reportedly approved by Iran’s top leaders, including Supreme Leader Ayatollah Ali Khamenei. The Bush administration turned the Iranians down flat — why negotiate with the next candidate for regime change? — and Cheney and Secretary of Defense Donald Rumsfeld reportedly reprimanded the Swiss ambassador for even delivering the message in the first place.