On Monday, CNN’s Christiane Amanpour asked how so many journalists could have been misled in the run-up to the Iraq War. She interviewed two reporters for Knight-Ridder newspapers, Jonathan Landay and Warren Strobel, both of whom have been vindicated as being consistently right on Iraq.

Amanpour began by recapping some of the George W. Bush administration’s hallmark assertions regarding Saddam Hussein’s purported programs to make nuclear, biological and chemical weapons, and highlighting the debunked claims that Iraq was importing aluminum tubes to use in centrifuges for enriching uranium.

‘So how could so any false assertions have been taken as fact?