The Russian Foreign Ministry made the comments in a Thursday statement issued following talks between the country’s Deputy Foreign Minister Sergei Ryabkov and his Iranian counterparts, Abbas Araqchi and Majid Takht-Ravanchi, in Tehran a day earlier, Press TV reported.
The statement further said Iranian and Russian officials held detailed talks to review the latest developments in the implementation of the nuclear deal, called the Joint Comprehensive Plan of Action (JCPOA).
The two sides emphasized the need for a continuous process of implementing the landmark accord, urging all parties to fully honor their commitments under the agreement, the Russian ministry added.
The Iranian and Russian diplomats further exchanged views on the removal of anti-Tehran sanctions and technical cooperation, expressing their countries’ determination to successfully implement the JCPOA.
Speaking to TASS news agency, the top Russian diplomat has criticized the US for maintaining sanctions on Iran that he said hurt the country's economy in the wake of the nuclear deal, echoing complaints the Islamic Republic has made in recent months.
"All the so-called unilateral sanctions that existed before [the nuclear] agreement was reached with Iran have stayed in place," Ryabkov said. "These unilateral sanctions are a big hindrance."
While the US has implemented the components of the agreement dealing with Iran's nuclear program, "it hasn't moved any further," Ryabkov said, and remaining sanctions have impaired Iranian integration into the international business community.
"Any deal serviced in dollars goes through corresponding controlling agencies of the US and can be suspended," he said, referring to the ban on Iran's access to the US financial system and dollar.
The JCPOA was inked between Tehran and the P5+1 group of world powers, namely Russia, China, France, Britain, the US and Germany on July 14, 2015.
The accord, which took effect in January, ended decades of economic sanctions against Iran in exchange for restrictions on its nuclear program.
However, months into the JCPOA implementation, Iran complains that the promised economic benefits have yet to materialize, and that it still does not have access to global financial markets.
Touching on his one-day trip to Tehran, Ryabkov described his talks in the Iranian capital as effective, saying, “The previous consultations of this kind were held last year. Since then, a lot of different issues have massed up, more large-scale and to certain extent more technical, on which we have had a conversation.”
New power plants
The construction of the Bushehr-2 nuclear power plant, cooperation with the International Atomic Energy Agency (IAEA) and obstacles to the progress of the JCPOA were among other issues discussed in the talks.
On Thursday, Press TV quoted the head of the Atomic Energy Organization of Iran (AEOI) Ali Akbar Salehi as saying that Iran and Russia have agreed to build two nuclear power plants in Iran's southern city of Bushehr shortly.
"Operations to build two new nuclear power plants in Bushehr will start on Sept. 10," Salehi said.
Construction of the power plants, with an estimated cost of 10 billion dollars, will be completed in 10 years, Salehi said.
By building these two power plants, Iran will save 22 million barrels of oil per year, Salehi said without detailing on the specifications of the projects.
Russia has already built Iran's first nuclear power plant.
The Bushehr Nuclear Power Plant, which is operating under the full supervision of the IAEA, reached its maximum power generation capacity in August 2012.
In September 2013, Iran officially took over from Russia the first unit of its first 1,000-megawatt nuclear power plant for two years.