Iran's ex-president Ahmadinejad joins Twitter, despite ban

Iran's hardline former president Mahmud Ahmadinejad became the latest leader to join Twitter on Sunday, despite having been instrumental in getting it banned from the country.Ahmadinejad's first tweet from his personal account was a video in which he called on people to follow him at @Ahmadinejad1956.Despite the service being blocked for ordinary citizens, many of Iran's top officials tweet regularly, including President Hassan Rouhani and Foreign Minister Mohammad Javad Zarif.