Where can I watch Rebel in United States?

Kamal resolves to change his life for the better, and so leaves Belgium to help victims of the war in Syria. But when he arrives, he is forced to join a militia and is left stranded in Raqqa. Back home, his younger brother Nassim quickly becomes easy prey for radical recruiters, who promise to reunite him with his brother. Their mother, Leila, fights to protect the only thing she has left: her youngest son.