Telling British tourists to flee Tunisia rewards terrorism | Simon Jenkins

The security hysteria of politicians such as Philip Hammond, our foreign secretary, is the only thing that poses an ‘existential threat’ to Britain

Britain has imposed economic sanctions on Tunisia. These are in retaliation for that country’s failure to prevent what the prime minister calls an “existential threat to Britain” from so-called Islamic State terrorists.

The head of London’s police, Sir Bernard Hogan-Howe, declared earlier this week that the Tunisia killings meant it was “highly like...