http://www.theguardian.com/world/2015/feb/21/iran-us-nuclear-talks-tehran-geneva
Top nuclear officials of Iran and the United States joined seven-nation talks Saturday in a move that may help resolve technical disputes standing it the way of a deal meant to curb Tehrans atomic activities in exchange for sanctions relief for the Islamic Republic.
Technical experts for Iran and the six nations it is negotiating with have been meeting alongside senior political officials. But Saturday was the first time that Iranian Atomic Energy chief Ali Akbar Salehi and US Energy Secretary Ernest Moniz also joined in.
World powers and Iran have set an end of March deadline for a framework agreement, with four further months for the technical work to be ironed out. The talks have missed two previous deadlines, and President Barack Obama has said a further extension would make little sense without a basis for continuing discussions.
If the talks fail, Obama may be unable to continue holding off Congress from passing new sanctions against Iran. That, in turn, could scuttle any further diplomatic solution to US-led attempts to increase the time Tehran would need to be able to make nuclear arms. Iran denies any interest in such weapons.
Skepticism about the negotiations already is strong among congressional hardliners, Washingtons closest Arab allies and Israels Prime Minister Benjamin Netanyahu, who is expected to strongly criticize them in an address the US Congress early next month.