The White House has dismissed a suggestion from Iranian President Mahmoud Ahmadinejad that Iran would close its nuclear facilities as long as Western nations did the same. His comments came as a deadline set by the UN for Iran to freeze its uranium enrichment program expires today. Meanwhile Iran has accused the US of backing a bomb attack that killed 11 Revolutionary Guards, just one week after the US accused Iran of supplying bombs targeting US troops in Iraq. We speak with retired Air Force Colonel Sam Gardiner. [includes rush transcript]