It’s exactly what the Saudis do without all the international outrage…..
Put to death at the executioner’s block… at the age of 100: ISIS thugs behead elderly cleric for ‘practising witchcraft’

WARNING GRAPHIC CONTENT: The frail prisoner, named as Sufi cleric Sheikh Sulaiman Abu Haraz, was dragged to an executioner’s block in Egypt’s Sinai Peninsula. Shocking images show a masked jihadist dressed in black using a long sword to carry out the beheading in front of a crowd of extremists. The killing was one of two executions captured on camera by fanatics from the ISIS-affiliated Ansar Bayt al-Maqdis group.