'Face the facts: jihadis are here and they want to wipe out infidels...'
New ID cards and more security checks are a tiny price to pay to beat the terrorists, writes Ruth Dudley Edwards
While there were no fatalities from the crude bomb in a tube train at West London's Parsons Green underground station, 30 people were injured, the threat level in the UK has been raised from severe to critical and there are armed police visible on London streets.
Let's start with the injuries.
If you haven't been caught in an explosion or you don't know anyone who has, it's easy to ignore what many suffer from physical and mental wounds. People horrified by the 1998 Omagh bombing, for instance, may remember that 29 people died (one a mother of unborn twins), but few will have taken in that around 300 people had injuries and countless numbers were affected by post-traumatic stress disorder.