The European sovereign debt crisis is knocking on the door of the very heart of Europe - and Belgium could be next in the firing line...

It is one of the anomalies of European history that a country as small as Belgium has so frequently been the battlefield for other people's wars. But as fears grow that the eurozone sovereign debt crisis could develop a momentum all of its own, how long before "plucky little Belgium" - the very heart of the European project - finds itself fighting an economic battle for its own survival?