The talks of Iran nuclear getting to conclusion?

The six world powers and Iran had a get together business pact in Vienna on Wednesday, trying to get an elusive magic formula to secure a milestone nuclear deal that will match and satisfy heat men in Tehran and Washington. The talk is to last for two days now, while the deadline for Iran and the five permanent members of the UN Security Council including Germany on Monday.

"This is a very critical week obviously in Iran negotiations," according to information, the US Secretary of State, John Kerry, will be in the Austrian capital later in the week. "We hope we get there but we can't make any predictions." Before this time, John Kerry had made clear that he would delay his arrival to Vienna. The State Department spokeswoman Jen Psaki said on Tuesday that Kerry would now travel to Vienna "later in the week", even though the exact day was not announced.

"Secretary Kerry will stay in London tomorrow where he will continue consulting with both the negotiating team in Vienna and his interagency counterparts in Washington," Psaki said.

On Thursday, John Kerry will hold separate meetings with the French and Saudi foreign ministers in Paris When Mohammad Javad Zarif the Iran's Foreign Minister, arrived Vienna on Tuesday, Zarif that a deal was "possible" and that what it fail would be when the six powers asked for too much. "If, because of excessive demands... we don't get a result, then the world will understand that the Islamic Republic sought a solution, a compromise and a constructive agreement and that it will not renounce its rights and the greatness of the nation," Javad . Further report from Kerry revealed in the statement that: "It is imperative that Iran works with us with all possible effort to prove to the world that the programme is peaceful." Philip Hammond the British Foreign Secretary called for more "flexibility by the Iranians to convince us that their intentions in their nuclear programme are entirely peaceful".

Monday's deadline suggested that the landmark which stands at after months of negotiations, is aimed at ease fears that Tehran might develop nuclear weapons under the guise of its civilian activities. The negotiation could resolve the following: silence talk of war, a 12-year standoff, help normalise Iran's relations with the West and boost the beleaguered Iranian economy with the mark of a rare foreign success for US President Barack Obama.

The US, China, Russia, Britain, France and Germany (the P5+1) want Iran to scale down its nuclear programme, in order to stop the possibility of Iran to assemble a nuclear weapon. It was recalled that Iran has insisted on its nuclear, and said that the aims are exclusively peaceful even its programme was not declared in the past. Iran wants the painful sanctions lifted.

Although, it appears that some grey areas appear provisionally settled. However, the big problem is still enrichment -- rendering uranium suitable for power generation with other peaceful uses, but also, at high purities, for a weapon. Iran has wanted to massively ramp up the number of enrichment centrifuges -- in order, it says, to make fuel for a fleet of future reactors. The West wants the number slashed, saying Iran has no such need in the foreseeable future.

Other thorny issues are the duration of the accord and the pace at which sanctions are lifted, an area where Iranian expectations are "excessive", one Western diplomat said. - Another extension? -

Given the differences, many analysts expect more time to be put on the clock. The Association analyst Kelsey Davenport said The alternative -- walking away -- would be "catastrophic", Arms Control.

"Given the political capital that both sides have invested... it would be foolish to walk away from the talks and throw away this historic opportunity," Kelsey stressed further.

There is another risks of extension sanctions from US sanctions, as the officials insist that they remain focused on getting the job done in time. One of the senior US official said : "An extension is not and has not been a subject of conversation at this point."