The G7 has said tougher sanctions on Russia could be imposed as soon as today. EU ambassadors are holding an emergency meeting in Brussels.
The strains on various outlying European economies have triggered talk about a break up of the euro zone (usually swiftly followed by denials that any such thing could happen). Now comes an interesting report from the London-based Centre for European Reform, looking at what would happen practically if a country were to leave the currency union. For an insight, the think tank turned to Jan Mathes, a former Slovak National Bank board member who was around when Czechoslovakia split.