Iran negotiations
Iran could dilute 60% enriched uranium if all US sanctions lifted, nuclear official says
Earlier this week, Tehran's Foreign Minister Abbas Araghchi said a complete halt to uranium enrichment was absolutely unacceptable to Iran.
What Arab media is expecting from the US-Iran talks in Oman - analysis
Why America's Western lens fails to understand Middle East dynamics - opinion
Iran agrees to discuss proxy terror, ballistic missile arsenal in US negotiations - NYT
Kerry leaves hospital, fit to fly for "critical" Iran nuclear deadline
Less than three weeks before deadline, US negotiators believe the talks will likely come down to the wire.
Iran says concerned over cyber-security of nuclear talks
Tehran requests to be informed about investigation results.
Swiss investigating house of suspected Iran nuclear talks hackers
Authorities confirm computers were seized days after investigation first launched.
US official: Next round of Iran nuclear talks 'pretty tough'
Among key issues yet to be resolved are the sequencing of sanctions relief for Iran and establishment of monitoring and verification measures to ensure that agreement will not be violated.
Former Mossad chief: Iran using Obama's desire for deal to extort concessions
"Their patience is much greater than the patience of western negotiators. They will exhaust the Americans, they will squeeze them," Shabtai Shavit says.
United Nations to begin talks with Syrian groups in hopes to end conflict
Other key world powers would also be consulted, but not the militant groups Islamic State or Nusra Front, which are classified as "terrorist organizations."
Steinitz: 'We are happy this morning' over agreement between Obama and Congress on Iran bill
The bill requires the Obama administration to send Congress regular, detailed reports on a range of issues including Iran's support for terrorism, ballistic missiles and nuclear programs.
All sanctions must go before final deal, says Iranian Foreign Minister
Zarif said no good agreement can be achieved with the threat of sanctions hanging over Iran.
Obama: Iran sanctions can be reimposed if Tehran violates nuclear deal
"We are absolutely convinced we can do it again," Obama said of the international sanctions, which have crippled Iran's economy.
US Congress will not accept a paper tiger
ANALYSIS: The average congressman may be unaware of the specific details challenging talks.