Signs of easing tensions have come in recent days after the Biden administration signaled a willingness to reengage in talks with Tehran and find a way that both sides can return to the 2015 nuclear deal. For more insights, Professor Wang Jin of the Institute of Middle Eastern Studies at the Northwest University of China, says Iran faces more domestic pressure than the U.S. over bilateral relations. The EU could only play the role of mediator, but the U.S. and Iran's roles are key.