"We haven't heard anything particularly positive in New York this week... If Iran wants to resolve these issues... they just need to provide answers and access to the IAEA," TASS quoted him as saying.
According to a representative of the American foreign policy department, Washington's position remains unchanged - Tehran should allow IAEA inspectors to check the origin of uranium particles at undeclared nuclear facilities.
The head of European diplomacy, Josep Borrell, said earlier that talks on the Iranian nuclear deal had stalled.
The countries of the European trio, which includes France, Germany and the UK, noted that Iran's position on the nuclear program jeopardizes the restoration of the Joint Comprehensive Plan of Action.
Russia's permanent representative to international organizations in Vienna, Mikhail Ulyanov, said that this statement was very untimely.