After his landslide election win, Mahmoud Ahmadinejad has been formally endorsed as Iran’s president. He takes over as crisis looms over the nation’s foreign policy. The world is waiting to see how Ahmadinejad will respond.At the top of his list of challenges must surely be the row over Iran’s nuclear programme, as the nation edges closer to possible UN sanctions. It follows Tehran’s decision to resume atomic fuel work, desipte EU warnings that this would put a stop to long-running talks. Iran insists its nuclear programme is peaceful. Washington however suspects it is a smokescreen for building atomic bombs. European negotiators want Iran to surrender nuclear activity in return for economic incentives. That is something Tehran is not willing to accept. It has however backtracked on plans to resume atomic work today, saying now its programme will restart early next week.