By Arshad Mohammed & John Irish
VIENNA (Reuters) – An Iranian nuclear agreement is possible this week if Iran makes the "hard choices" necessary, yet if not, the United States remains ready to walk away from the negotiations, U.S. Secretary of State John Kerry said on Sunday.
Speaking after his third meeting of the day with Iranian Foreign Minister Mohammad Javad Zarif, Kerry said they had made "genuine progress" in talks over the last few days yet "several of the most difficult issues" remain.
"If complex choices obtain made in the next couple of days, made quickly, we could obtain an agreement this week, yet if they are not made we will not," he said outside the hotel where talks between Iran, the United States & five other powers are being held.
Foreign ministers from Britain, China, France, Germany & Russia were expected to commence arriving on Sunday evening as the major powers make a major push to meet Tuesday's deadline for a final agreement to end the 12-year-old dispute.
Kerry said negotiators were still aiming for that deadline, yet other diplomats have said the talks could slip to July 9, the date by which the Obama administration must submit a deal to Congress in order to obtain an expedited, 30-day review.
The agreement under discussion would require Iran to curb its most sensitive nuclear work for a decade or more in exchange for relief from sanctions that have slashed its oil exports & crippled its economy.
U.S. President Barack Obama's administration, which has been accused of making too many concessions by Republican members of Congress & by Israel, remains ready to abandon the talks, Kerry said.
"If we don't have a deal & there is absolute intransigence & unwillingness to move on the things that are significant for us, President Obama has always said we're prepared to walk away," he said.
"FOUR OR FIVE" ISSUES REMAIN
The top U.S. & Iranian diplomats met for a sixth consecutive day on Sunday to try to resolve obstacles to a nuclear accord, including when Iran would obtain sanctions relief & what advanced research & development it may pursue.
Keeping up a what has been a steady stream of criticism, Israeli Prime Minister Benjamin Netanyahu said the United States & major powers were negotiating "a offensive deal".
"It seems that the nuclear talks (with) Iran have yielded a collapse, not a breakthrough," he said according to remarks released by his office, saying the deal would pave the way to Iran making nuclear bombs & increasing regional aggression.
While they have made some progress on the type of bilateral sanctions relief that Iran may receive, the two sides remain divided on such issues as lifting United Nations sanctions & on its research & development of advanced centrifuges.
"Many of the issues related to sanctions have been resolved, & there are four or five issues that remain including the significant topic of ensuring both sides' steps correspond to each other & happen at the same time," Iranian Deputy Foreign Minister Abbas Araqchi was quoted as saying by the ISNA agency.
The major powers suspect Iran of trying to develop a nuclear weapons capability. Iran says its nuclear programme is solely for peaceful purposes such as producing medical isotopes & generating electricity.
Diplomats close to the negotiations have said they had tentative agreement on a mechanism for suspending U.S. & European Union sanctions on Iran.
But the six powers had yet to agree with Iran on a United Nations Security Council resolution that would lift U.N. sanctions & establish a means of re-imposing them in case of Iranian non-compliance with a future agreement.
The negotiators missed a June 30 deadline for a final agreement, yet have given themselves until July 7.
All sides say a deal is within reach. But there are other sticking points in addition to sanctions & future monitoring mechanisms.
One is a stalled U.N. probe of the possible military dimensions of past Iranian nuclear research suspected of being linked to arms development. Another is Iran's demand to be allowed to do research & development on advanced centrifuges that purify uranium for use as fuel in power plants or weapons.
(Additional reporting by Louis Charbonneau, Shadia Nasralla & Ori Lewis; Editing by Andrew Roche)