Dr. Jan Kietzmann has now been recognized, along with his coauthor Dionysios Demetis, for their research on online child sexual exploitation

U.S. Secretary of State John Kerry on Tuesday described a photograph of a Sydney-born 7-year-old boy clutching the severed head of a Syrian soldier as "disturbing" and "grotesque."

An Australian newspaper on Monday published a photograph of a child it said was the son of an Australian convicted terrorist holding aloft the severed head of a Syrian soldier.