Nawal Sweidan quietly folded her son's clothes and straightened the bedsheets in his room as she always used to do when he was out at work or at university. She still does it regularly, even though he hasn't been home for almost 10 years since he was taken away by militiamen.
Her son Safaa vanished in late July 2014. At around 1:30 a.m., just days before the holy month of Ramadan was to end and holiday celebrations were to begin, a group of men showed up at the family's doorstep and asked for Safaa, a law student and postal carrier in his early 20s.