Nuclear watchdog chief visits Iran

The head of the UN nuclear agency has flown to Tehran on a delicate mission that - if successful – could finally lift the veil on whether Iran is seeking atomic arms while strengthening the Islamic Republic’s negotiating hand in crucial nuclear talks with six world powers later in the week.

The trip by International Atomic Energy Agency chief Yukiya Amano is focused on getting agreement from Iran to terms that will allow the agency to resume probing whether Tehran secretly worked on nuclear arms.