President Rouhani made the remarks in a meeting with his Russian counterpart Vladimir Putin who is currently in Iran to attend meetings between Iranian, Azeri and Russian presidents.

Axar.az reports citing IRNA that relations between Tehran, Moscow and Baku for the expansion of regional relations and cooperation in various fields is of prime importance, President Rouhani said.

Some very good agreements in energy, peaceful nuclear energy, transportations and transit of goods have been signed between the two sides and cooperation on implementing these agreements will be underway, President Rouhani said.

Tehran openly welcomes active presence of Russian investors from private sectors in running infrastructure projects such as industry and energy, expansion of railroads and construction of North-South corridor, the Iranian president said.

The Joint Comprehensive Plan of Action (JCPOA) was a multilateral international agreement which its maintenance help bolsters constant peace and stability in the region and the globe, he said.

The role of Russia in bolstering and stability of JCPOA and fulfillment of commitments of all parties will be very impressive and important, President Rouhani said.

Close cooperation between Iran and Russia in fight against terrorism in the region was very fruitful and promising and it is very important that such cooperation to be continued till the end of such fight, Rouhani said.

Referring to Astana talks, Rouhani said Iran believes that countries in the region will suffer a lot due to instability in the region and Iran will support stability and security of the region, and believes that Syrian problems should be resolved through political means.

The two presidents called for the expansion of bilateral, regional and international cooperation in various sectors.

The Russian President, for his part, thanked the invitation and hosting Iran, Russia and Azerbaijan presidents and said the Islamic Republic of Iran is a good neighbor and strategic partner for Russia and both sides have ample of common interests which will be achieved through mutual cooperation.

President Putin also called for expansion of cooperation between Iran, Russia and Azerbaijan for transports, transit of goods as well as North-South corridor.

He expressed the hope that the meeting will lead to expansion of relations and cooperation between the parties.

Russian companies are eager to cooperate in various economic fields such as peaceful nuclear energy, road and rail transportations, President Putin said.

Trade exchange between Iran and Russia registered a remarkable growth in 2016 and such trend should be continued, President Putin said.

The JCPOA was a very good international accord which served global peace and stability, President Putin said.

Non-acceptance of some countries in carrying out their international duties and commitments is not acceptable, Russian president said, adding that Moscow believes that one-sided violation of the JCOPA is not acceptable under any reason and in the meantime the JCPOA has nothing to do with Iran's defense and missiles programs.

IAEA is the only authorized body who can verify Iran's commitment to the JCPOA, President Putin said.

On Syrian developments, he said the role of Russia, Iran and Turkey in fight against terrorism will be continued under Astana negotiations.