ANKARA (Reuters) - A year after Iran’s nuclear deal with the West, hardliners are gaining authority in a backlash against pragmatic President Hasan Rouhani that his allies say could leave him sidelined or push him out of power in an election next year. (R L) Iran's Supreme Leader Ayatollah Ali Khamenei, Iranian President Hassan Rouhani, and former Iranian president Akbar Hashemi Rafsanjani attend