Iran is officially protesting the decision of the United States to designate the Islamic Revolutionary Guard Corps (IRGC) as a "terrorist group".
In a letter to the United Nations, its Foreign Minister Javad Zarif has said the move could have dangerous consequences.
This, as supporters of the IRGC held a demonstration in Tehran condemning the US president.
Al Jazeera's Zein Basravi reports from Tehran.
