World

Kerry, Iranian FM Zarif meet as Iran nuke talks enter final phase 48 hours ahead of deadline

  • U.S. Secretary of State John Kerry, center, arrives at the Palais Coburg where closed-door nuclear talks with Iran take place in Vienna, Austria, Sunday, June 28, 2015. (AP Photo/Ronald Zak)

    U.S. Secretary of State John Kerry, center, arrives at the Palais Coburg where closed-door nuclear talks with Iran take place in Vienna, Austria, Sunday, June 28, 2015. (AP Photo/Ronald Zak)  (The Associated Press)

  • From left, U.S. Secretary of Energy Ernest Moniz, U.S. Secretary of State John Kerry and U.S. Under Secretary for Political Affairs Wendy Sherman, attend a meeting with Iranian Foreign Minister Mohammad Javad Zarif, second from right, at a hotel in Vienna, Austria, Sunday, June 28, 2015. After two years of high-pressure gatherings, a sense of predictability emerged in the negotiations between Kerry and Zarif. (Carlos Barria/Pool Photo via AP)

    From left, U.S. Secretary of Energy Ernest Moniz, U.S. Secretary of State John Kerry and U.S. Under Secretary for Political Affairs Wendy Sherman, attend a meeting with Iranian Foreign Minister Mohammad Javad Zarif, second from right, at a hotel in Vienna, Austria, Sunday, June 28, 2015. After two years of high-pressure gatherings, a sense of predictability emerged in the negotiations between Kerry and Zarif. (Carlos Barria/Pool Photo via AP)  (The Associated Press)

  • From left, U.S. Secretary of Energy Ernest Moniz, U.S. Secretary of State John Kerry and U.S. Under Secretary for Political Affairs Wendy Sherman, sit during a meeting with Iranian Foreign Minister Mohammad Javad Zarif at a hotel in Vienna, Austria, Sunday, June 28, 2015. After two years of high-pressure gatherings, a sense of predictability emerged in the negotiations between Kerry and Zarif. (Carlos Barria/Pool Photo via AP)

    From left, U.S. Secretary of Energy Ernest Moniz, U.S. Secretary of State John Kerry and U.S. Under Secretary for Political Affairs Wendy Sherman, sit during a meeting with Iranian Foreign Minister Mohammad Javad Zarif at a hotel in Vienna, Austria, Sunday, June 28, 2015. After two years of high-pressure gatherings, a sense of predictability emerged in the negotiations between Kerry and Zarif. (Carlos Barria/Pool Photo via AP)  (The Associated Press)

Negotiations over Iran's nuclear program are entering their final phase with just 48 hours until a deadline for Tehran and six world powers to reach a deal.

With the June 30 deadline looming, U.S. Secretary of State John Kerry was meeting Sunday in Vienna with Iranian Foreign Minister Mohammad Javad Zarif, their third encounter since Saturday. Other foreign ministers are expected to join.

The goal of the talks involving Iran and the U.S., Britain, China, France, Germany and Russia is a deal that would crimp Tehran's capacity to make nuclear weapons in exchange for sanctions relief.

On Saturday, diplomats said Iran was considering a U.S.-backed plan for it to send enriched uranium to another country for sale as reactor fuel, a step that would resolve one of several outstanding issues.