No breakthrough at Iran nuclear talks, ministers push for deal soon

An Iranian security guard stands as U.S. Secretary of State John Kerry (2nd R) meets with the Iranian delegation including Iranian Foreign Minister Mohammad Javad Zarif (not pictured) at a hotel where the Iran nuclear talks meetings are being held in Vienna, Austria July 2, 2015. REUTERS/Carlos Barria

VIENNA (Reuters) - Tehran and world powers were still shy of a breakthrough at nuclear talks on Thursday as foreign ministers flew in to help push for a swift deal and resolve disputes over how sanctions could be lifted and how Iran's compliance would be monitored.

Iran is in talks with the United States and five other powers - Britain, China, France, Germany and Russia - on an agreement under which it would curtail its nuclear programme in exchange for relief from economic sanctions.