'Latest Government figures show more than 400 British citizens who left the UK to join ISIS in its sick war against the west have returned home over the past 18 months.
But, bizarrely, despite being suspected of leaving to aid the world's deadliest terror organisation in places where be-headings and brutal executions are commonplace, our security services do not routinely detain or question them.
And powers introduced by former Prime Minister David Cameron two years ago that can temporarily prevent them returning have only been used ONCE.'
Express