Ann Curry of NBC reports that Iranian President Hassan Rouhani says:
“They want to kill humanity,” he said. “And from the viewpoint of the Islamic tenets and culture, killing an innocent people equals the killing of the whole humanity. And therefore, the killing and beheading of innocent people in fact is a matter of shame for them and it’s the matter of concern and sorrow for all the human and all the mankind.”
President Hassan Rouhani also takes a hard stand against IS saying Iran will never let IS take control of parts of Iraq.
Iran is Shiite Muslim. One can read on the internet that jihad for Sunni and Shia Islam is much the same.