Every four years the Polisario Front holds a congress, to discuss how to proceed with their 27-year battle against Morocco for self-determination of the disputed Western Sahara. Hundreds of Polisario representatives based as far a field as Australia make their way back for the event. This year, for the first time since a ceasefire was signed with Morocco in 1991, the Polisario held their congress in the heart of what they proudly call "liberated territory".