Talks between Iran and world powers resume in Vienna in an effort to reach a permanent agreement regarding Tehran’s nuclear program, as the July 20, 2014 deadline for such an agreement nears. Iran and the so-called P5+1 group of nations — the United States, the United Kingdom, France, China, Russia and Germany are involved in the agreement. Michael Mann, a spokesman for foreign policy chief, Catherine Ashton, tells reporters the six world powers are committed to reaching an agreement before the deadline. He describes the atmosphere at the talks as “very workmanlike, very serious, very determined” and said the negotiations would continue for “as long as it takes” for a deal to be forged. The deadline could potentially be extended.