After Greece, investors bet that Portugal would be the next member of the European Union to fall, with a default probability of 66%. For Ireland, that figure slips to 51%; the chances of Spain and Italy defaulting are 33% and 28% respectively, according to Markit.
These probabilities are calculated based on the current cost of buying protection over a period of years, typically five, versus the expected recovery rate.
Even if Greek and European officials can agree on deficit reduction measures, the bailout plans need to run a gauntlet of votes in 17 separate European parliaments.
Greece has only about €300 billion ($411 billion) in outstanding debt, believed to be mostly in the hands of European banks, adding all five countries' debt together comes to €2.8 trillion ($3.8 trillion).
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