It comes after representatives of the so-called P5+1 group of nations worked for the second time in two weeks to strike an agreement with Iran.
Under the agreement, Iran has committed to halt parts of its nuclear program in exchange for temporary sanctions relief.
The United States has praised Iran's cooperation in the controversial matter but meanwhile, Israel remains unsatisfied, warning that any easing of sanctions against Iran could lead to the country acquiring atomic weapons.
United States Secretary of State, John Kerry has dismissed Israel's criticism of the nuclear deal struck between Iran and world powers saying it will help make Israel and allies in the region safer.
The Israeli government fears the deal being offered will give Iran more time to master nuclear technology and a mass potential bomb fuel.
But Mr Kerry says the outcome of the negotiations will meet the security of the people in the region.
"It will make our partners in the region safer, it will make our ally Israel safer. And that's been difficult and a prolonged process, it's been difficult for us, it's been difficult for our allies and it's obviously been difficult for Iran."
Iranian Foreign Minister, Mohammad Javad Zarif, says the deal with world powers on the country's controversial nuclear program is an important achievement but only a "first step" towards a final accord.
And he claims the deal has a clear reference that Iran's enrichment program will continue.
"The current agreement in two distinct places has a very clear reference to the fact that Iranian enrichment program will continue and will be part of any agreement now and in the future."
Meanwhile United States President, Barack Obama assures Iran has promised not to enrich more uranium above a level of five percent for six months.
He says in return the United States and its allies will afford Iran with sanctions relief equivalent to 7billion US dollars.
"On our side the United States and our friends and allies have agreed to provide Iran with modest relief while continuing to apply our tougher sanctions. We will refrain from imposing new sanctions and we will allow the Iranian government access a portion of the revenue they have been denied through sanctions. But the broader architecture of sanctions will remain in place and we will continue to enforce them vigorously. And if Iran does not fully meet its commitment during the six months phase we will turn off the relief."
But Israel says there is no reason for the world to be celebrating.
In recent weeks, Israel has warned the emerging deal would give Iran too much relief from economic sanctions without halting Iran's march toward a nuclear bomb.
A final text of the deal has yet to be released, but European Union foreign policy chief, Catherine Ashton says it includes reciprocal measures by both sides.
Ms Ashton says the agreement has been made in a coordinated and positive manner between the nations.
"And although it has been intensive and very, very detailed, it has also been dealt with a real sense of mutual respect and I am delighted that we got there. Well, this is a first step but it's, as you will see, very much within the framework of looking for a comprehensive agreement. And there's no question that this is what we, the E3 + 3* want to achieve. It's also what I believe the government of Iran wishes to achieve."
Ms Ashton says the deal would be co-ordinated by the International Atomic Energy Agency or IAEA.
The nuclear agreement confirms Iran's promise to grant daily access to its reactors to inspectors from the IAEA nuclear watchdog.
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