Six of the world’s major powers hope to resume nuclear talks with Iran once the country’s president-elect takes over next month.
EU foreign policy chief Catherine Ashton earlier held meetings with diplomats from the US, Russia, China, France, Britain, and Germany in Brussels.
“We wait now for the team to be appointed by Iran, we very much hope that will be soon and we look forward to meeting them as soon as possible,” Ashton said in a video statement on Tuesday.
Incoming president Hassan Rohani, a self-styled moderate, is expected to appoint a new chief nuclear negotiator once he takes office on August 5.
Saeed Jalili, the current holder of the post, was appointed by President Mahmoud Ahmadinejad. It is a job once held by Johani himself between 2003 and 2005.
Western powers believe Iran wants the capacity to build an atomic weapon.
Tehran says its nuclear program is for peaceful purposes.