We have also accepted in principle all of the recommendations of Sir John Wheeler's recent review of airport security, which will in particular enhance the co-ordination of the security effort across different departments and agencies.

BBC: Air marshal statement in full

Boston, for instance, has seen similar falls in its murder rate, yet it rejected zero-tolerance policing in favour of close co-ordination between the police, probation officers and black leaders, and an effort to get guns off the streets.

ECONOMIST: The dark side of zero tolerance