Whoever wins the Iranian election will have to engage in sustained diplomatic fence-mending. President Mahmoud Ahmadinejad’s apparently thoughtless way with words has cost Iran dear over the past three and a half years. This month, Foreign Minister Manouchehr Mottaki has been in Riyadh – where he met King Abdullah Bin Abdelaziz – and Manama, seeking to patch up the latest strains in relationships with Saudi Arabia and Bahrain. He also visited Kuwait, with whom Tehran’s dealings are rather more placid.