London's mayor says a small child shown threatening non-Muslims in a grisly Islamic State video should be taken from his parents if the family ever returns to Britain

London's mayor says a small child shown threatening non-Muslims in a grisly Islamic State video should be taken from his parents if the family ever returns to Britain

London's mayor says a small child shown threatening non-Muslims in a grisly Islamic State video should be taken from his parents if the family ever returns to Britain.

• Child in Islamic State propaganda video should be put in foster care: Boris Johnson