The global nuclear watchdog, the IAEA, has closed a 12-year-long investigation into Iran’s nuclear activities - a key step towards lifting UN sanctions.
The IAEA concluded Iran conducted nuclear weapons-related research until 2003 and to a lesser extent until 2009, but found no evidence of this since. A deal struck earlier this year with world powers to lift sanctions was linked to the IAEA’s findings. Iran has denied pursuing a clandestine nuclear weapons programme.