Pope Francis admits for first time that priests and bishops sexually abused nuns

Pope Francis admits for first time that nuns were forced into 'sexual slavery' at the hands of priests
and bishops as he vows to do more to fight the problem
Pope Francis admitted for first time priests and bishops sexually abused nuns
Publicly acknowledged scandal at end of historic visit to United Arab Emirates
Francis then said Vatican would be willing to mediate in the Venezuela crisis
Pope also signed a 'world peace' document with the imam of Cairo's Al-Azhar