Iranian Defence Minister Brigadier General Hossein Dehqan has officially invited his Russian and Syrian counterparts, Sergey Kuzhugetovich Shoygu and Fahd Jasim al-Furayj, to visit Tehran for the trilateral meeting.
The three ministers are expected to discuss the latest developments in the region and weigh plans to reinforce the war on terrorism.
Iran and Russia, known as the main allies of Syria, have been looking for a solution to a crisis that has plagued the Arab country for more than five years.
Syria has been gripped by civil war since March 2011 with Takfiri terrorists, including the Daesh or ISIS terrorist group, currently controlling parts of it, mostly in the east.
The Syrian conflict has killed at least 260,000 people, according to the UN, and more than half of Syria’s pre-war population of 22.4 million has been internally displaced or fled abroad.