Five things you need to know about Greece's deepening economic woes

1. Who will lose?
Snip...... if Greece leaves the European Union......

Asset prices will plummet, inflation will soar, unemployment will be rampant and its economy will collapse.

In terms of the pure cash effect, Greece's exit will crystallise losses on all outstanding loans from EU nations – through the European Central Bank and emergency funding – currently standing at about 331 billion euros ($480 billion).
Germany and France between them account for 176 billion euros ($255 billion), almost half the total.

Then there is the private debt held by banks. Greece owes German, French and British banks roughly 30 billion euros, and the IMF holds a similar level of debt.
If the nation goes into default and is forced out of the eurozone, these countries would have to write off Greece's debts; that is a pretty strong motive to keep Greece in the tent.