Iran has launched a brutal crackdown on anti-government protests since the September 16 death in custody of 22-year-old Mahsa Amini. Several detainees have been condemned to death.

Tehran has also been criticised for supplying its ally Russia with kamikaze drones, which Moscow has in turn used to bombard Ukrainian cities, often hitting civilian homes and infrastructure.

Some EU capitals have begun to move towards adding the IRGC to the terrorist blacklist, which would expose another important plank in the Islamic republic's government to sanctions.

In the past, some have resisted this call, fearing it would be based on shaky legal grounds and further poison already dreadful ties with the West.

Europe's position is hardening, however, and the opening of this week's parliamentary session in Strasbourg was marked by a rally of Iranian expatriates demanding the terror listing.

"I guarantee that all options allowing the EU to react to events in Iran remain on the table," EU justice commissioner Didier Reynders told the parliament earlier this week.

The MEPs are expected to repeat their plea on Thursday in another vote to accept a non-legislative report on Europe's response to protests and executions in Iran.