Iran

Diplomats confirmed the new development to the Associated Press on Saturday.

The annex, one of five meant to accompany the agreement, outlines which U.S. and international sanctions will be lifted and how quickly. 

Diplomats said senior officials of the seven-nation talks, which include U.S. Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif, still had to sign off on the package.

Mohammad Javad Zarif suggested a deal acceptable to his country will open the door to cooperation on fighting the upsurge of Middle East extremism threatening both nations' interests.

Zarif did not mention the United States by name in his video message. 

But with the Iran six-power talks having devolved essentially into bilateral U.S.-Iran negotiations over the past year, his comments were clearly directed at the Americans, who have been the primary drivers of the crippling economic sanctions imposed on his country over its nuclear program.

Yukiya Amano, head of the U.N.'s International Atomic Energy Agency, said his meetings with Iranian President Hassan Rouhani resulted in a "better understanding on some ways forward," but that "more work will be needed."

The formulation of his statement was similar to previous ones issued by the IAEA, which has struggled for nearly a decade to resolve its concerns.

Amano's trip Thursday to Tehran was significant because it represented his last chance to secure access and cooperation before a July 7 deadline for a long-term nuclear agreement between Iran and world powers.

Obtained by The Associated Press, the confidential International Atomic Energy Agency report said more than four tons of the enriched uranium had been fed into a pipeline that ends with conversion of it into oxide, which is much less likely to be used to make nuclear arms.

That key condition is significantly reducing its stocks of enriched uranium that could be used for atomic weapons.

Iran's failure to comply would have severely undermined the negotiations, which are aimed at curbing the Iranians' nuclear program for a decade in exchange for tens of billions of dollars in relief from international economic sanctions

The State Department announced the extra days of talks only hours before the expiration of the target date for their completion. 

He will meet there with U.S. Secretary of State John Kerry in an attempt to resolve disputes that have forced an extension of the negotiations past the June 30 deadline.

Lavrov is to arrive Tuesday, the day that Iranian Foreign Minister Mohammad Javad Zarif returns to Vienna.

As Zarif flew home Sunday for consultations on how to proceed at the talks, a U.S. official confirmed that negotiators will miss a June 30 target date for a deal, aimed at limiting Tehran's nuclear program in exchange for sanctions relief.

Iranian media said Mohammed Javad Zarif's trip was planned in advance. Still, the fact that he was leaving the talks so close to the Tuesday deadline reflected his need to get instructions on how to proceed on issues where the sides remain apart — among them how much access Tehran should give to U.N. experts monitoring his country's compliance to any deal.

The United States insists on more intrusive access than Iran is ready to give. 

The Associated Press said this was confirmed by Diplomats.

While Iran says it does not want nuclear arms, it has more than 8 tons that could be turned into the fissile core of a dozen or more atomic bombs if the material was further enriched to weapons-grade levels.

The export-and-sell option has been floated before, and the diplomats emphasized that the sides have not agreed on that solution in the search for what to do with the low-enriched uranium stockpile.

But a senior Iranian official warned that negotiations are hampered by differences not only between Tehran and the six other countries it is bargaining with but internally among the six as well.

Kerry was the first to arrive Friday evening, with diplomats from Iran, Britain, Germany, Russia, France and China expected in the Austrian capital over the coming days.