The summer (at least in the Northern Hemisphere) began with an important referendum in Britain over sovereignty. It is only fitting then that summer should end with another important referendum on sovereignty, this time in the Balkans. Voters in Bosnia and Herzegovina's Serb-dominated Republika Srpska – one of the two constituent states that make up the larger political entity – yesterday went to the polls to express their views on whether Jan. 9 should remain a holiday to mark the day Bosnian Serbs declared their own state. At the time of writing, preliminary results show voters have chosen to keep the holiday on Jan. 9. However, the fact that the referendum even moved forward is the real story here.