Defense ministers of Iran, Russia and Syria are to hold a trilateral meeting today in Tehran to discuss regional developments and coordinate efforts in the fight against terrorism, Tasnim News Agency reported. Iranian Defense Minister Lieutenant General Hossein Dehqan has officially invited his Russian and Syrian counterparts, Sergey Kuzhugetovich Shoygu and Fahd Jasim al-Furayj, to visit Tehran for the rare meeting. The three ministers are expected to discuss the latest developments in the region and weigh plans to reinforce the war on terrorism.