Basically, this is about nationalist and ethnic tensions between the Flemish (Dutch speaking) and Wallooon (Francophone) seem to be increasing, and currently the winners of the most recent elections on June 10 have been unable to form a government.

It will be interesting to see how the EU will handle this if these disputes in Belgium end up with a dissolution of the nation, particularly with regards to Brussels, which is nominally multi-ethnic and bi-lingual, but is more of a French speaking island in Dutch speaking Flanders.

As an aside, this sort of increased ethnic division and governance problems are a direct result of proportional representation, which encourages people to self identify along narrow sectarian lines.