London police chief warns terror attack a case of "when, not if"

LONDON: Britain cannot be fully protected against terrorism and an attack similar to those seen recently in mainland Europe is a question of "when, not if," London's police chief said on Sunday.

The warning by Metropolitan Police Commissioner Bernard Hogan-Howe reflects Britain's current "severe" threat level for international terrorism and follows a string of attacks in Germany and France, some of which have been linked to Islamic militants.