You'll remember, that agreement said the emergency bailout facility, the EFSF, would henceforth play the role of "European Monetary Fund", able to intervene in markets to keep borrowing costs for solvent governments under control.

BBC: Central banks and the 'spirit of 2008'

It was a previous Socialist government that originally turned to the eurozone and International Monetary Fund in 2011 for a bailout, under the terms of which Portugal must get its overspending back under control.

BBC: Portugal passes another austerity budget