The former French president, Nicolas Sarkozy, has started his five- year sentence at La Santé prison in central Paris. Sarkozy was convicted of criminal conspiracy to finance his election campaign with funds from the Libyan dictator, Muammar Gaddafi. He denies wrongdoing.

Also in the programme: A rare interview with the Israeli writer David Grossman on what he calls his country's moral test; and the German pastor who made a startling discovery about his grandfather while watching a documentary about the Nazis.

(Photo: Nicolas Sarkozy has maintained his innocence and has lodged an appeal. Credit: Reuters)