***WARNING: This programme includes graphic descriptions of sexual violence*** 'A humanitarian crisis', that's how the medical charity Medicins Sans Frontiers describes the levels of violence against women they are dealing with in Papua New Guinea - levels they usually only witness in war-zones. Russian photojournalist Vlad Sokhin reports on the untold stories of women subjected to the most extreme violence perpetrated anywhere on earth, including the brutal torture of women accused of witchcraft.