Greece misses a deadline for a €1.6bn (£1.1bn) payment to the International Monetary Fund, as Eurozone ministers refuse to extend its bailout.
Russian gas purchases are suspended by Ukraine following a breakdown in talks aimed at keeping supplies running for the next three to six months.
Russian prosecutors will examine whether the Soviet Union acted legally when it recognised the Baltic states' independence in 1991.
Could Russia face new threat from Islamic State in Caucasus?
Why is Greece holding a referendum?
Hungary tries to lure back young expats
Italian astronaut Samantha Cristoforetti on life in space
Why Greece is on the brink of capital controls
Germany and the US go through a rocky patch
The EU's long-standing ideals are no longer valid for many Europeans, as politicians as diverse as Alexis Tsipras and David Cameron put forward alternative visions, Katya Adler reports.
Dealing with crime on the streets of Soho