A veteran consultant to US spy agencies predicted on Saturday that Iran won't build nuclear bombs and that the power of its president, Mahmoud Ahmadinejad, will quickly fade.

The projections are based on a gaming and computer model built by political scientist Bruce Bueno de Mesquita, an advisor to the CIA and the US Department of Defense. Bueno de Mesquita's computer model has reportedly been found by CIA officials to be right 90 per cent of the time.