This week, we talk to Clémence Bectarte from the International Federation for Human Rights about the arrest of a commander of an extremist Syrian rebel group. Islam Alloush stands accused of detaining and torturing civilians in Syria. In particular, he is suspected of being behind the abduction of the Syrians known as the "Douma Four" in 2013. His arrest in France comes months after several human rights groups filed a criminal complaint against members of his group, Jaysh al-Islam.