Iran is at the forefront of the fight against terrorism, President Hassan Rouhani said on Saturday, highlighting Tehran's contribution to regional peace and security. "Following the [July 14] nuclear deal and the opportunity for cooperation and understanding, Iran is now considered the flag-bearer of the real fight against terrorism, and is also the messenger of stability and security for regional nations," Rouhani said in a meeting with newly-appointed Iranian ambassadors, Tasnim News Agency reported.