The main aims of the negotiations are to get the US to return to the deal and lift sanctions, and for Iran to resume full compliance with the 2015 accord.
The $400 billion agreement includes economic and cultural interaction between the two sides and also paves the way for Iran's participation in the Belt and Road initiative.
US Secretary of State Antony Blinken said reviving the accord "would be the best result for America's security", but that if diplomacy fails, "US and allies are looking at other steps, other options".
Visits of foreign ministers of Saudi Arabia, Kuwait, Oman and Bahrain, along with the secretary general of the GCC will "deepen relations between the two sides," says Chinese Foreign Ministry.
Iranian Foreign Ministry has claimed the Western side realised it must "back down" from its "maximal demands," as nuclear talks in Vienna are set to resume.
The rare joint statement comes amid negotiations over reviving the Iran nuclear deal and escalating tensions between the United States, Russia and China.
Iran announces that it has carried out a new space launch, in a move likely to anger Western powers amid tough talks on reviving a 2015 nuclear deal.
Israeli premier's remarks urging negotiators to take up a tougher line towards Iran as a response to Tehran's new demands comes as talks resume in Vienna to patch up the tattered 2015 deal.
From Gulf countries lifting the Qatar blockade to the bombing of Gaza and a coup in Sudan, these were some of the moments that shaped the Middle East.
Iranian Foreign Minister Hossein Amirabdollahian said Tehran wants negotiations to focus on removing economic sanctions and selling Iranian oil easily.
Iran's head of nuclear energy Mohammad Eslami has said Tehran's targets related to enriching uranium are meeting its industrial and production needs.
Participants from Britain, France, Germany, China, Russia and Iran that are trying to revive a 2015 nuclear deal will resume their efforts on December 27.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2022 TRT World.