A US official told Al Jazeera that negotiators held in-depth talks covering all elements of the nuclear agreement, including mechanisms to prevent escalation and keep the strait fully open.
Middle East media sources say a joint statement from Iranian, American and mediating parties is expected soon, and that the Iranian delegation remains at the Bürgenstock resort, with its head reviewing the draft statement with mediators.
This article was written by Eamonn Sheridan at investinglive.com.
