Iran: nuclear deal talks 'a step forward'

A meeting in Vienna among the remaining signatories of the embattled nuclear deal between Iran and world powers has been 'a step forward' according to Iran. But is this enough to keep the deal alive? One of the keys to that - the Europeans believe - is a trade mechanism called INSTEX that would allow countries to continue trading with Iran, without falling foul of secondary US sanctions.

Also in the programme: Russian President Putin says liberalism has 'become obsolete', is he right? And, the ancient palace revealed by receding waters.

Picture: Abbas Araghchi (2ndR), political deputy at the Ministry of Foreign Affairs of Iran, and Helga Schmid (2ndL), Secretary General of the European Union's External Action Service (EEAS), take part in a meeting of the Joint Commission of the Joint Comprehensive Plan of Action (JCPOA). Credit: Alex Halada / AFP/Getty Images.