Iran and the Prospect of Military Action

Last week, the Jerusalem Post reported that the Bush Administration planned to attack Iran before leaving office.  The White House said the story "was not worth the paper it was printed on," but Senators of both parties have been asking if there are any such plans. There's another report today that the Bush Administration plans to attack Iran, this time from the Asia Times, which cites a former assistant secretary of state saying the US plans an air strike on the headquarters of Iran's elite Quds force, which the US calls a "terrorist group."  The International Atomic Energy Agency says Iran is "willfully uncooperative" about its nuclear program. What are the prospects—and possible consequences—of attacking Iran?  Is it good diplomacy to keep "all options open?"