Iran's nuclear saga: from 2015 accord to new talks

The main developments in Iran's nuclear programme since 2015, as envoys of the United States, European Union and Iran travel to Vienna for talks on salvaging a landmark 2015 accord, according to AFP. - Historic accord - In 2013, newly elected Iranian president Hassan Rouhani says he is ready for "serious" negotiations on Iran's nuclear programme, following an eight-year stalemate under ultraconservative Mahmoud Ahmadinejad. Rouhani secures support from supreme leader Ayatollah Ali Khamenei for efforts to break the deadlock. On July 14, 2015, Iran and the five permanent members of the UN Security Council -- Britain, China, France, Russia and…