Foreign Minister Mohammad Javad Zarif, US Secretary of State John Kerry, Russian Foreign Minister Sergei Lavrov, German Foreign Minister Frank-Walter Steinmeier, French Foreign Minister Laurent Fabius, Chinese Foreign Minister Wang Yi, British Foreign Secretary Philip Hammondn, and EU High Representative Federica Mogherini are present in the meeting, IRNA reports.

Iranian Deputy Foreign Minister Abbas Araqchi said Sunday that no deal on the Iranian nuclear program has been struck yet but many issues have been resolved.

'There is no deal yet, but we have found solutions to many issues,' Araqchi said.

Iran demands that all sanctions and UN resolutions imposing restrictions against Tehran be scrapped as part of its nuclear deal with major world powers, Araqchi said.

'All six UN resolutions should be lifted,' he added.

The UN Security Council, the United States, the European Union and a number of other countries imposed sanctions on Iran in a bid to curtail its peaceful nuclear program.