Bulgaria blocked Russian cargo flights bound for Syria from its airspace on Tuesday.
The EU's poorest country attempts to cope with a soaring number of asylum seekers and refugees through harsh methods.
Drills will include simulated anti-air and anti-submarine warfare exercises, basic ship handling maneuvers and simulated attacks.
A study found that two fifths of young women in England had suffered sexual abuse.
An alleged associate of the Kouachi brothers is to be extradited, after detainment at the Bulgarian border.
From Moscow to Siberia to Bulgaria, Russian war monuments have faced a rough year.
Russian President Vladimir Putin's cancellation of the pipeline running gas from Russia to the EU has hampered Russian influence but at what cost?
Muslim prayer leader Ahmed Mussa, five men and one woman were charged.
Centre-right GERB wins parliamentary vote as Socialists admit "heavy defeat"