The crisis could worsen social discontent and complicate collaboration with the European Union and Russia.

Financial and political constraints will make it harder for many governments to maintain balance in the coming months.

Concerns about immigration are delaying discussion of the countries' admittance to the Schengen zone.

The Cabinet's resignation highlights how the economic crisis continues to weaken EU governments.

Russia is on its way to diversifying its access to its main natural gas market, Europe.

Running out of time for its pipeline to Europe, Moscow will need to offer concessions to Sofia.

Eurozone integration efforts have been met with different responses from Hungary, Romania and Bulgaria.

Brussels is attempting to give Central and Eastern European countries negotiating leverage over natural gas prices.

There appears to be a transnational agenda by Iranian-backed Hezbollah to target Israeli tourists.