Katherine Tulich Australian film maker Gabriel Shipton wants his new documentary “Ithaka”, which will have its world premiere at the Sydney Film Festival on Sunday, to shine a new perspective on his brother, the polarizing Wikileaks founder, Julian Assange.“It’s a story that’s never been told before,” Shipton, who produced the film, told Variety. “We’ve learned Julian’s story through media headlines, but I wanted to tell this story through his family.