Iran talks: Kerry to meet UK, French diplomats with deadline for agreement 4 days away

Iranian Foreign Minister Mohammad Javad Zarif, front left, former EU foreign policy chief Catherine Ashton, rear second left, and U.S. Secretary of State John Kerry, right, wait for the start of closed-door nuclear talks on Iran in Vienna, Austria, Friday, Nov. 21, 2014. (AP Photo/Ronald Zak) (The Associated Press)

U.S. Secretary of State John Kerry arrives at Vienna's Schwechat airport, Austria,Thursday, Nov. 20, 2014. Kerry has arrived in Vienna to join high-stakes nuclear negotiations with Iran ahead of a looming Monday deadline for a deal. Kerry will meet Thursday with Iranian Foreign Minister Mohammad Zarif and Catherine Ashton, EU foreign policy chief, on the sidelines of the talks that face the Monday deadline. (AP Photo/Ronald Zak) (The Associated Press)

Journalists are waiting in front of Palais Coburg where closed-door nuclear talks with Iran are being held in Vienna, Austria, Friday, Nov. 21, 2014. (AP Photo/Ronald Zak) (The Associated Press)

With Iran nuclear talks stalled four days before a deadline for agreement, U.S. Secretary of State John Kerry is to meet with his British and French counterparts to discuss the way forward.

The meeting, set for Friday morning, follows discussions Thursday among Kerry, Iranian Foreign Minister Mohammad Javad Zarif and former EU foreign policy chief Catherine Ashton.

Negotiators from six powers are hoping for an agreement to reduce the potency of Iran's nuclear program and slow its technical ability to produce atomic weapons. Iran denies seeking such arms, but is negotiating in pursuit of relief from international sanctions.

Expectations are growing that the Monday deadline for a full deal will be missed because of differences on how much Iran needs to reduce the size and scope of key nuclear programs.