The mystery of the 24 Dutch Golden Age paintings

Eleven years ago, 24 Dutch Golden Age paintings disappeared from a regional museum in the north-west Netherlands.

In July this year two representatives of a right-wing Ukrainian militia turned up at the Dutch Embassy in Kiev demanding 50m euros (£36m) for the return of the paintings.

BBC Newsnight's Gabriel Gatehouse has been delving into a murky world where art theft and Eastern European politics collide.