Elsewhere in cultural enrichment:

Dutch Prime Minister Mark Rutte was said this week to have received extra security because of fears that drugs gangs are planning to kidnap him.

Mr Rutte cycles to work but there are fears that he has been shadowed by a gang known as the “Mocro Mafia”. It gets its name from Moroccan groups involved in drug trafficking.

The Netherlands faces significant problems from the narcotics trade. The port of Rotterdam is a major hub for cocaine smuggling, while Amsterdam was accused in an official report of giving free rein to “a motley crew of drugs criminals, a ring of hustlers and parasites".