Risks of intervention and opposition divisions

Donald Trump has promised he will ‘shoot at Iran’ if Iranian security services attack anti-government protesters, but analysts suggest the US is not prepared for military action. It comes as the death toll from Tehran’s crackdown on protests soars, and as demonstrations continue to shake the country. Lucy Hough speaks to the Guardian’s diplomatic editor, Patrick Wintour – watch on YouTube. Help support our independent journalism at theguardian.com/infocus