At U.N., Iran president again denounces U.S.

President Mahmoud Ahmadinejad excoriates the U.S. and its allies, blaming them for centuries of misery, including the current global economic turmoil. Dozens of diplomats walk out. With his now-familiar mix of bombast, politics and theater, Iranian President Mahmoud Ahmadinejad on Thursday denounced the United States and its European allies as colonialist "slave masters" intent on wrecking the