Iran "will fall into the hands of the most militant and hardline elements," @AliVaez of the ICG told Euronews.
The US say it is, and it's relatively straightforward.
Iran expert Soraya Lennie tells Euronews: "I really don't see a lot of positive avenues left open to de-escalate this crisis.
A violent crackdown on recent protests and internet restrictions in Iran present diplomatic challenges for the EU as it attempts a balancing act of keeping the Iran nuclear deal alive while standing firm on human rights.
Iranian Massoud Soleimani and Chinese-American Xiyue Wang were released in "prisoner swap" between two countries that have seen heightened tensions recently.
Human rights organisation Amnesty International says that reports and verified video from Iran show security forces shooting protesters.
Riot police and security forces clashed with demonstrators in Tehran and dozens of cities across Iran on Saturday, Iranian news agencies and social media said.
After decades of conflict and instability, around 2.5 million Afghans have sought asylum overseas, many of them in Europe. But the war torn country is also a destination for refugees fleeing neighbouring states, including Pakistan and Iran.