World

Iranian foreign minister says other side's changing demands are bogging down nuclear talks

  • Iranian Foreign Minister Mohammad Javad Zarif, left, talks to journalist from a balcony of the Palais Coburg hotel where the Iran nuclear talks are being held in Vienna, Austria, Thursday, July 9, 2015. Long-standing differences persist over inspections of Iranian facilities and the Islamic republic's research and development of advanced nuclear technology. (Carlos Barria/Pool Photo via AP)

    Iranian Foreign Minister Mohammad Javad Zarif, left, talks to journalist from a balcony of the Palais Coburg hotel where the Iran nuclear talks are being held in Vienna, Austria, Thursday, July 9, 2015. Long-standing differences persist over inspections of Iranian facilities and the Islamic republic's research and development of advanced nuclear technology. (Carlos Barria/Pool Photo via AP)  (The Associated Press)

  • U.S. Secretary of State John Kerry delivers a statement to the media on the Iran nuclear talks in Vienna, Austria, Thursday, July 9, 2015. Kerry signaled Thursday that diplomats won't conclude an Iran nuclear agreement by early Friday morning, conceding another delay that this time could complicate American efforts to quickly implement any deal. (Carlos Barria/Pool Photo via AP)

    U.S. Secretary of State John Kerry delivers a statement to the media on the Iran nuclear talks in Vienna, Austria, Thursday, July 9, 2015. Kerry signaled Thursday that diplomats won't conclude an Iran nuclear agreement by early Friday morning, conceding another delay that this time could complicate American efforts to quickly implement any deal. (Carlos Barria/Pool Photo via AP)  (The Associated Press)

  • Iranian Foreign Minister Mohammad Javad Zarif gestures to journalists from a balcony outside of the current round of Iran nuclear talks, being held in Vienna, Austria July 10, 2015.  U.S. Secretary of State John Kerry urged Iran to make the “tough political decisions” needed to reach an agreement but Iran's Zarif accused major powers on Friday of backtracking on previous pledges and throwing up new "red lines" at nuclear talks. (Carlos Barria/Pool via AP)

    Iranian Foreign Minister Mohammad Javad Zarif gestures to journalists from a balcony outside of the current round of Iran nuclear talks, being held in Vienna, Austria July 10, 2015. U.S. Secretary of State John Kerry urged Iran to make the “tough political decisions” needed to reach an agreement but Iran's Zarif accused major powers on Friday of backtracking on previous pledges and throwing up new "red lines" at nuclear talks. (Carlos Barria/Pool via AP)  (The Associated Press)

Nuclear talks between Iran and six world powers appear no closer to a deal, and Iran's foreign minister says the other side is to blame.

Mohammad Javad Zarif says that the countries that Iran is negotiating with are changing their conditions. He says they are internally split, accusing them of using pressure tactics — something he says won't lead to a deal.

Zarif's comments Friday followed a U.S. warning that Washington is ready to walk away from the talks. The current round is now in its 14th day. The sides have given themselves until Friday to come to agreement after twice missing previous target dates.

The U.S., Russia, China, Britain, France and Germany are offering Iran sanctions relief in exchange for long-term, verifiable curbs on Tehran's nuclear activities.