Guardian report.
An Iranian university professor working at a key nuclear facility has been killed in a bomb explosion, the latest in a series of assassinations and attempted killings linked by the country's authorities to a secret war by Israel and the US to stop the development of what Tehran insists would be a peaceful nuclear capability.
Mostafa Ahmadi Roshan, 32, a chemistry expert and a director of the Natanz uranium enrichment plant in central Iran, died after two assailants on a motorcycle attached magnetic bombs to his car, according to the semi-official Fars news agency.