Head of country's Atomic Energy Organization blames Israel for 'sowing doubts' about the nature of the Islamic Republic's nuclear program

State Department says Iran nuclear program, Yemen discussed; kingdom's state media says US secretary of state spoke with Prince Faisal on regional security cooperation

Foreign diplomats involved say Tehran wasn't what brought them to Sde Boker, as each country has its own concerns that justify their participation in first-of-its-kind gathering

Zohar Palti says Israel's attack plans led Obama to cut interim deal with Iran, claims 'there will be no limitations on us' if Iranians pursue a bomb

Development enables resumption of talks that were stalled after Moscow demanded assurances sanctions over Ukraine won't impact its ties with Tehran

Washington predicts accord can still be worked out, but not much time left, after Russia derails negotiations with last-minute demands over sanctions imposed for Ukraine invasion

Islamic Republic says trip tied to normal activity, as European foreign affairs czar declares talks over, calling on political leaders to make a decision on restoring JCPOA

As talks to revive Iran nuclear agreement in home stretch, Chris Murphy says US doesn't have luxury of bringing back conditions under which accord was signed due to Trump pull-out

State Department official reports 'significant progress,' but warns time running short to solve last issues, as other parties also confirm sides nearing agreement on reviving pact

In a report to member countries, IAEA estimates figure at 33 kilograms; total stockpile assessed at 3,197, though it could not verify exact size due to limitations on inspectors