UK spy chief: Taliban takeover of Afghanistan a 'boost' to extremists elsewhere

The Taliban takeover of Afghanistan will provide a "morale boost" to extremists plotting attacks elsewhere and could again give them a base to operate as they did in the run-up to 9/11, the head of Britain's MI5 domestic spy service said on Friday.

Ken McCallum, director-general of the Security Service, best known by the initials for Military Intelligence Section 5, told the BBC the threat to Britain from terrorism was "a real and enduring thing".

"We do face a consistent global struggle to...