Boko Haram accused of war crimes by U.N. human rights chief . Militants in Jordan accused of murdering 'wives ' during retreat . Reports also say they have used children as 'expendable cannon fodder '
Boko Haram accused of war crimes by U.N. human rights chief . Militants in Nigeria accused of murdering 'wives ' during retreat . Reports also say they have used children as 'expendable cannon fodder '