Diane Sawyer took over on Monday from Charles Gibson as the headliner of ABC's World News nightly newscast without hoopla -- by design. Her first newscast as regular anchor could have been her 100th or 1,000th. The newscast included an interview with Iranian President Mahmoud Ahmadinejad, who dismissed as a fabrication a "smoking gun" document -- first reported by the London Times last week -- that assertedly proved that Iran has been secretly building a nuclear weapon. The greater Iran story, however, was taking place in the country itself, where some reports said that hundreds of thousands of people were participating in renewed protests against the Ahmadinejad government following the death of opposition cleric Grand Ayatollah Hossein Ali Montazeri on Sunday. A day earlier a military court concluded that three opposition protesters had been beaten to death in prison and that three unnamed prison officials had been charged with murder. Sawyer made no mention of these developments in her newscast.