Iran has reportedly asked Saudi Arabia to help sell its oil and get rid of the US sanctions in exchange for limiting Houthi attacks on the kingdom’s oil facilities.
The Iraqi officials familiar with the development informed a media organization.
"We do think that all these developments have reinforced our conviction that what is needed most now as a top priority is to do away with any disruptive factors and pick up the pace of negotiation here," Wang Qun, China's ambassador to the UN atomic watchdog, told reporters after senior diplomats ended a meeting in Vienna.
"No step-by-step plan is being considered," Khatibzadeh told state broadcaster Press TV. "The definitive policy of the Islamic Republic of Iran is the lifting of all US sanctions."
The US State Department has said the focus of the Vienna talks will be on "the nuclear steps that Iran would need to take in order to return to compliance" with the nuclear accord.
Tehran and Washington have said they want the other side to move first to hold talks to salvage the Joint Comprehensive Plan of Action (JCPOA), under which Tehran secured an easing of sanctions by limiting its nuclear work.
Last month, Erdogan told Iranian President Hassan Rouhani in a phone call that he saw a window of opportunity for Iran and the United States, adding he wanted US sanctions on Tehran to be lifted.