Speaking at American University, Barack Obama has said that the only alternative to the Iran deal would be war.
Tensions in the nuclear talks between Iran and six powers have boiled over in recent days, producing heated exchanges among foreign ministers
Nuclear talks regarding Iran's programe has resumed in Vienna
Israel already gets at least $3 billion annually from Washington however fears over an Iran deal has seen a request from Israel to the US to increase the spending.
Iran's Foreign Minister Javad Zarif has said on Thursday he was hopeful that a deal regarding the nuclear negotiations would be finalized in the earliest possible time.
Hans Blix, former nuclear chief, has said that it is difficult for Iran as "Singling out any one country for anything beyond what the rest of the world does is difficult," Blix said. "No country would accept having inspections any time, any place."
Iranian procurement network has been associated with two companies which have sanctions in place by the UN as well as the US and the EU
An Indian delegation recently visited Iran to renew talks on seeking development rights of the Farzad B gas field and enhancing oil supplies if a deal is clinched by the end of June.
Iran's foreign minister said that senior foreign ministry officials and deputy foreign ministers from Iran and six powers would resume negotiations on a final nuclear deal on Thursday
Austria, and 159 other countries have called for a nuclear ban because of its devastating effects on humaity.
The US Senate on Tuesday turned back an attempt to elevate any nuclear deal with Iran into a treaty, a vote that gave momentum to Republicans and Democrats trying to pass a bill giving Congress a chance to review and possibly reject any agreement with Tehran
The 12 year stand off over Tehran's nuclear programme appears to be ending as the world powers begin their first day of a month long conference to discuss the Non-Proliferation Treaty.
Zarif and Kerry will meet to discuss negotiations on a landmark nuclear deal with the United States and five other global powers as they try to secure a final agreement with Iran by a June 30 deadline.
Major world powers and Iran will hold technical level talks in Vienna April 22-23 to build on the framework accord reached on Tehran's contested nuclear programme, the EU announced Thursday,
"If there is no end to sanctions, there will not be an agreement," Rouhani said in a televised speech in the northern Iranian city of Rasht.
The chancellor, speaking to reporters alongside the visiting Indian Prime Minister Narendra Modi, said Iran and the P5+1 still had lots of work to do to finalise the nuclear deal.
Iran and six world powers struck a framework agreement this month to curb Iran's nuclear programme in exchange for easing Western sanctions.
Iranian Supreme Leader Ayatollah Ali Khamenei, who has the final say for Iran on the deal, on Thursday ruled out any "extraordinary supervision measures" over nuclear activities and said military sites could not be inspected.
He repeated his faith in President Hassan Rouhani's negotiating team. But in remarks apparently meant to keep his hardline loyalists on side, he warned about the "devilish" intentions of the United States.
He said a reimposition of sanctions would be triggered by a finding of the International Atomic Energy Agencythat Tehran had broken the agreement.
Netanyahu speaking on CNN's "State of the Union" program, addressing the U.S. lawmakers to look into Iran deal regardless of their political orientation.