They defied a vast Persian army in 480 BC, rejected Italy's ultimatum during World War Two and told Europe to take a hike when presented with an unpalatable bailout deal in July, risking Greece's place in the euro zone.
European Commission President Jean-Claude Juncker said he wanted to get a group of EU leaders to agree on short-term measures to tackle the migrant crisis in the western Balkans at a summit on Sunday.
Germany is introducing measures to tackle its refugee crisis earlier than previously expected, a top government official said on Friday, allowing accelerated deportation procedures to begin as early as next week.