http://news.bbc.co.uk/2/hi/middle_east/6958824.stm Mr Bush compared current calls for withdrawal from Iraq with what happened at the end of the Vietnam War in 1975. "Many argued that if we pulled out, there would be no consequences for the Vietnamese people," Mr Bush said. "The world would learn just how costly these misimpressions would be. Mr Bush spoke of the massacres under Cambodia's Khmer Rouge "Three decades later, there is a legitimate debate about how we got into the Vietnam War and how we left." The potential consequences of a pull out are easy to speculate - but are they comparable to Vietnam?