The working session between representatives of Iran and world powers on the resumption of the JCPOA in Vienna, Austria, on April 27, 2021. (Photo: Xinhua/VNA)

Speaking online, the official said that the past three indirect rounds of negotiations between the US and Iran in Vienna didn’t produce any specific solutions, but helped find a number of options for how to resume the Joint Comprehensive Plan of Action (JCPOA).

Yet there remains much to be done for parties involved in regards to sanctions, the order and time needed to realize it.

Iran's senior negotiator Abbas Araqchi said last week that despite differences between the two sides, the US and Iran have reached a common stance on a number of issues.

The US delegation plans to return to Vienna this week for the fourth round of indirect negotiations with Iran.