The visit by International Atomic Energy Agency head Rafael Grossi is seen as critical to clinching a return to the nuclear agreement, and comes parallel to negotiations in the Austrian capital.
Senior US State Department official says negotiators have made significant progress regarding Iran nuclear deal and it's in a better position, but added some serious issues still remains.
Though Vienna talks resume amid complications raised by Iran FM's accusation that Russia tried to scupper the pact, Moscow representative Ulyanov says all parties are led "by unity of purpose which is full restoration of nuclear deal."
Secretary of State Antony Blinken told European allies that the US is prepared to talk to Iran about both countries returning to compliance with a 2015 deal that aims to stop Tehran from developing a nuclear weapon.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2022 TRT World.