Boris Johnson has warned a "tide or terror" could arrive in Britain unless action is taken against Islamic State (IS).
Suggesting stronger military action is needed, Mr Johnson wrote in the Daily Telegraph that doing nothing to combat the threat of IS was "surely the worst of all".
What is the point of having a defence budget, if we don't at least try to prevent the establishment of a terrorist 'caliphate' that is profoundly hostile to civilised values?
Do nothing now, and the tide of terror will eventually lap at our own front door.
A British family have told ITV News of their devastation after discovering a close relative is fighting with the Islamic State in Iraq.
A French journalist who was held hostage with James Foley in Syria has told ITV News it was "devastating" to see his murder.