An array of hardliners could stand in the way of Rouhani's U.S. overtures.

Iranians from across the political spectrum hailed the historic phone call between Obama and Rouhani.

Iran's new leader expressed hope that the governments can stop the escalation of tensions.

Officials held a "constructive" meeting on resuming a probe of allegations that Tehran has worked on atomic arms.

The U.S. and its international partners declared that a "window of opportunity has opened" to peacefully settle their nuclear standoff.

Discussing whether to resume inspections meant to determine whether Tehran worked on atomic arms.

The U.S. and its international partners emerged from a meeting with Iran declaring that a "window of opportunity has opened" to peacefully settle their nuclear standoff.

Iran's leaders anxious to end punishing international sanctions.

Iran's foreign minister is urging step-by-step compromises between his country and world powers.

Foreign ministers from the five permanent members of the U.N. Security Council and Germany will meet with Iranian Foreign Minister Javad Zarif on Thursday in high-level talks.