Mojtaba Khamenei has been named Iran's new supreme leader and successor to his father, Ayatollah Ali Khamenei, who was killed on the first day of the war with the US and Iran. Some pro-establishment crowds have taken to the streets to celebrate the appointment of a hardliner close to the powerful Islamic Revolutionary Guard Corps (IRGC). But other Iranians have told the BBC that they believe it will not bring about change. "Even the thinnest of chances for a change are no more within the system," said a man in his 30s in the capital, Tehran. He said the Assembly of Experts - an 88-member clerical body that chooses the supreme leader - could not have selected anyone closer to Ali Khamenei. "So, everything will remain much the same; they don't even need to change their chants to support the [new leader]," he added. For years, there have been rumours that Mojtaba Khamenei held considerable influence behind the scenes in Iran. Many expect him to continue his father's hardline policies.…