Why did the Eurogroup decide to look into debt relief measures for Greece?

The measures seek to address a general concern that future debt payments will pose an undue burden on budget spending and thus stifle the economy. Gross Financing Needs (GFN), the total amount of money a country spends in one year on interest rates payments and repaying maturing debt, is the benchmark used to measure this burden. The Eurogroup has agreed that, under a baseline economic scenario, Greece’s GFN should remain below 15% of GDP during the post-programme period for the medium term, and below 20% of GDP after that.