"Balkans is different - but remember what Princip triggered"

European leaders have an obvious choice in the Balkans - either deal with the problem, or wait for it to deal with them, says Carl Bildt.

The former special EU envoy to Bosnia-Herzegovina proposes, in an op-ed published on the Project Syndicate website, accelerating EU enlargement and integration, and "replicating the EU Eastern Partnership, with the creation of a Balkan Partnership, while always keeping membership on the table."