He is hailed as Turkey’s best-known novelist. But today Orhan Pamuk goes on trial accused of insulting national identity.He faces three years behind bars if convicted. The hearing is being seen as a critical test of the country’s commitment to freedom of expression.It also risks straining ties with the European Union which Turkey hopes to join. At the centre of the controversy is a magazine interview given by the award-winning writer. In it, he says that a million Armenians were killed in massacres in World War One as well as 30,000 Kurds in recent decades. Ankara rejects accusations of genocide against Armenians. The case has prompted a warning from European Union Enlargement Commissioner Olli Rehn. He has said that the hearing puts Turkey itself in the dock. The EU started membership talks with the country in October.