Iranian President has called on all world countries to engage in the fight against the common threat of terrorism, stressing that the terror groups will "show no mercy" to anyone, Press TV reported.
In a Wednesday meeting with visiting Syrian Foreign Minister Walid al-Muallem in Tehran, Rouhani emphasized the need for all countries and governments to regard the anti-terror battle as a duty.
The Iranian president warned of the growing wave of terrorism as a "universal" threat, adding that "terrorists will have no mercy for anyone or anything."
The Iranian chief executive rejected any military solution to the crisis in Syria, saying Iran will do everything in its power on the political scene to help end the violence, which has so far claimed over 230,000 lives, and restore calm to the Arab country.
"We have no doubt that the terrorists will eventually suffer defeat and will be driven out of the region," Rouhani added.
Muallem, in turn, thanked the Islamic Republic for standing by the Syrian nation over the past four years, outlining the latest developments in Syria's political arena as well as on the battlefield against the foreign-backed terrorists.
The top Syrian diplomat also hailed the outcome in the nuclear negotiations over Iran's nuclear program, saying the breakthrough could play a positive role in regional developments.