Carl Bildt, former prime minister of Sweden, shares his perspective on European politics - this week from Stockholm.

Are Serbia and Kosovo heading towards a confrontation?

It looks very bad. What happened in northern Kosovo the other day was distinctly bad. A collection of fairly well-armed and well-organized Serb thugs did an operation that was eventually beaten back by Kosovo police. It follows a cycle of escalation that was initiated on the Kosovo side, has to be said, last year, and has not been brought under control by rather intense diplomacy, both by the Europeans and by the Americans. At the moment, things look very bleak. This, of course, is damaging the EU integration prospects for both Serbia and Kosovo. Let's see what happens.