Move and Countermove: Ahmadinejad and Bush Duel

Statements by Iranian President Mahmoud Ahmadinejad and U.S. President George W. Bush on Aug. 28 show how rapidly the thinking in Tehran is evolving in response to Iranian perceptions of a pending U.S. withdrawal from Iraq -- and how the Bush administration is shifting its focus from the Sunni threat to both the Sunni and Shiite threats....