Ministers back to Vienna for final Iran nuclear deal push

Foreign ministers from major powers were expected back in Vienna on July 4 seeking to score a huge diplomatic success by nailing down a nuclear deal with Iran after almost two years of intense effort.

Ahead of the final deadline on July 6, there were signs that inside the neoclassical palace-turned-hotel hosting the past eight days of talks by armies of technical and legal experts, the end may be in sight.

"Extending the talks is not an option for anyone... We are trying to finish the job," Iran's lead negotiator Abbas Araghchi told Iranian TV late July 3, saying there was a "positive atmosphere."

But he added: "If we reach an agreement that respects our red lines then there will be a deal. Otherwise we prefer to return home to Tehran empty-handed."  

Diplomats said that on one of the thorniest issues - sanctions relief for Iran - a compromise may have been worked out, at least among the experts thrashing out the complex final accord.

"There are still differences," an Iranian official insisted, however, while a Western diplomat said that on U.N. sanctions --as opposed to EU and U.S. ones - there was "no agreement yet."

Under the mooted accord, building on a framework deal from April, a complex web of sanctions suffocating the Iranian economy will be progressively lifted if Tehran massively scales down its nuclear program for at least a decade.

This is aimed at extending the time needed by Iran to produce enough nuclear material for one bomb -- it denies any such aim -- to at least a year from several months at present.

Coupled with more stringent U.N. inspections, this will give ample time to stop any such "breakout" attempt, while keeping a modest civilian nuclear program in place in Iran, the...