Greek government-debt crisis
A trade deficit means that a country is buying more than it produces, so it has to borrow from others. Both the Greek trade deficit and budget deficit rose from below 5% of GDP in 1999 to peak around 15% of GDP in the 2008–2009 periods. Greece was perceived as a higher credit risk alone than it was as a member of the Eurozone. Thus investors felt the EU would help out Greece.