Few observers will be surprised to hear that radical Islamists will, this year and beyond, keep trying to carry out terrorist operations in Britain. But the form of the next attack may be very different from what security services have been preparing for. That was demonstrated by the recent revelations of an alleged plot to kidnap - and broadcast the killing of - a Muslim British serviceman.
Terrorists are always adapting and innovating; the authorities constantly playing catch-up. It's now a gravely serious game of cat and mouse.