In recent years there have been an increasing number of incidents involving diplomats, such as the storming of the US embassy in Tehran and taking of hostages, and the murder of a British policewoman by a member of the Lybian mission in London. Other less serious ones, like the flouting of traffic regulations and the non-prosecution of those stealing, have brought the question of immunity into the public domain. Why, it is asked, should law-abiding citizens put up with lawless behaviour from those who can retreat into the sanctuary of an embassy?