In a phone talk with Oman's Sultan Qaboos bin Said Al Said on Friday, Iran's President Hassan Rouhani appreciated Oman's constructive role in resolving the region's crises, especially Qaboos efforts to resolve Iran's nuclear program crisis.

The news on the two heads of states' phone talk appeared on the Twitter page of the Iranian president on Friday morning, IRNA reported.

Oman was the first sponsor of negotiations between Iran and the major powers to end the crisis of Tehran's nuclear program.