Greece faces a referendum

As the government was on the verge of collapse, the Greek cabinet offered to fully support Prime Minister George Papandreou, and his surprise plan to call a referendum on the Greek Financial crisis.  Papandreou’s plan is to seek the support of the Greek people, a majority of whom dislike the bailout terms, is the latest challenge to Europe’s crisis-fighting strategy. This proposal threatens Greece's loyalty to the terms of a new deal with it's lenders. The referendum shows that the positive regard of last week’s European Union summit will fade quickly. This situation increases the risks of a bigger default on Greek debt and,as well as Greece ultimately leaving the euro zone. Never the less, this whole situation cannot end well, as in the end Europe will suffer either from the betrayal of Greece, or from the dept the zone has gotten it self into from borrowing money to pay for Greece's dept.

Source: New York Times

How does a country in dept, that gets more in dept, help another country rise from the dept?