Women walk through an old neighbourhood of central Tehran

Women walk through an old neighbourhood of central Tehran on January 20, 2014, as Iran announced that it would halt production of 20 percent enriched uranium following the arrival of inspectors from the UN nuclear watchdog on the weekend to oversee implementation of a landmark nuclear deal clinched with world powers to put temporary curbs on the Islamic republic’s nuclear programme. (Behrouz Mehri/AFP/Getty Images)