Iranian Revolutionary Guards
Iranian Revolutionary GuardsReuters

An influential Iranian general who has reportedly been near the front line against the Islamic State (ISIS) group was quoted Thursday saying the Sunni jihadists are "nearing the end of their lives".

General Qassem Suleimani, the once rarely seen commander of the powerful Qods Force, has become the public face of Iran's support for the Iraqi and Syrian governments against Sunni rebellions in their countries.

He has frequently been pictured on social media in Iraq with pro-government forces, including Kurdish fighters and Shia Islamist militia units in battle areas.  

"Considering the heavy defeats suffered by Daesh and other terrorist groups in Iraq and Syria, we are certain these groups are nearing the end of their lives," Suleimani was quoted as saying by the semi-official Fars news agency, using an Arabic acronym for ISIS.  

His extremely rare published remarks came in a speech made Wednesday in his home province Kerman to mark the 36th anniversary of Iran's Islamic revolution.  

Suleimani also said Tehran's regional influence was growing.

"Today we see signs of the Islamic revolution being exported throughout the region, from Bahrain to Iraq and from Syria to Yemen and North Africa," he said.

"The arrogants and Zionists have admitted, more than before, to their own weakness and to the Islamic republic's power, following their successive defeats," he said.

Iranian officials often use the term "arrogants" to refer to the United States and other Western powers, while "Zionists" is used in Tehran to refer to Israel without acknowledging its existence as a state.

Suleimani reportedly landed in Baghdad hours after ISIS overran Mosul in June and led a counter-attack at the head of Iran's deep military involvement in Iraq.

The Qods Force - the foreign wing of Iran's elite Revolutionary Guards - conducts sensitive security functions abroad, including intelligence, special operations and political action deemed necessary to "protect the Islamic republic", which often takes the form of terrorist attacks and sabotage.

It's primary aim is to "export the revolution" of radical Shia Islam in Iran.

It has provided key support to pro-regime forces in Syria, including training, advice and in active combat.