“We have made significant progress,” Price is quoted by TASS.

According to him, "the parties to the possible conclusion of a deal, but a number of difficult questions remain open."

Earlier, Iranian Deputy Foreign Minister, head of the Iranian delegation at the talks in Vienna, Ali Bagheri Kani, said that the parties to the negotiations on the nuclear deal in Vienna are close to concluding an agreement. 

The Russian Permanent Representative to International Organizations in Vienna, Mikhail Ulyanov, spoke out against the establishment of artificial deadlines in the negotiations on the JCPOA and welcomed the continuation of consultations on its restoration.