World

Experts for Iran and 6 world powers work on Iran nuclear deal with 6 weeks to June deadline

  • Director General of the International Atomic Energy Agency, IAEA, Yukiya Amano from Japan speaks during an interview with the Associated Press in Vienna, Austria, Tuesday, May 12, 2015. Amano said setting up a potential showdown with Iran, that his experts will have the right to push for access to Iranian military sites under an envisaged nuclear agreement between Tehran and six world powers. (AP Photo/Ronald Zak)

    Director General of the International Atomic Energy Agency, IAEA, Yukiya Amano from Japan speaks during an interview with the Associated Press in Vienna, Austria, Tuesday, May 12, 2015. Amano said setting up a potential showdown with Iran, that his experts will have the right to push for access to Iranian military sites under an envisaged nuclear agreement between Tehran and six world powers. (AP Photo/Ronald Zak)  (The Associated Press)

  • Director General of the International Atomic Energy Agency, IAEA, Yukiya Amano from Japan speaks during an interview with the Associated Press in Vienna, Austria, Tuesday, May 12, 2015. Amano said setting up a potential showdown with Iran, that his experts will have the right to push for access to Iranian military sites under an envisaged nuclear agreement between Tehran and six world powers. (AP Photo/Ronald Zak)

    Director General of the International Atomic Energy Agency, IAEA, Yukiya Amano from Japan speaks during an interview with the Associated Press in Vienna, Austria, Tuesday, May 12, 2015. Amano said setting up a potential showdown with Iran, that his experts will have the right to push for access to Iranian military sites under an envisaged nuclear agreement between Tehran and six world powers. (AP Photo/Ronald Zak)  (The Associated Press)

  • Director General of the International Atomic Energy Agency, IAEA, Yukiya Amano from Japan speaks during an interview with the Associated Press in Vienna, Austria, Tuesday, May 12, 2015. Amano said setting up a potential showdown with Iran, that his experts will have the right to push for access to Iranian military sites under an envisaged nuclear agreement between Tehran and six world powers. (AP Photo/Ronald Zak)

    Director General of the International Atomic Energy Agency, IAEA, Yukiya Amano from Japan speaks during an interview with the Associated Press in Vienna, Austria, Tuesday, May 12, 2015. Amano said setting up a potential showdown with Iran, that his experts will have the right to push for access to Iranian military sites under an envisaged nuclear agreement between Tehran and six world powers. (AP Photo/Ronald Zak)  (The Associated Press)

Experts from Iran and six world powers are gathering in Vienna for the next round of negotiations meant to result in a nuclear deal curbing Tehran's atomic activities in exchange for sanctions relief.

The technical experts meeting Tuesday are to be joined by senior political officials from Iran, the United States, Russia, China, Britain, France and Germany later in the week. The sides are aiming for a comprehensive agreement by the end of June.

Diplomats say that some progress has been made in drafting an agreement but significant blank sections remain. The negotiators also are working on technical annexes outlining ways of implementing a deal and timeframes.

The six want limits on Iranian programs that could be used to make nuclear arms. Tehran denies any interest in such weapons.