Leaders of the 19 nations with the euro as their common currency labored into the early hours of Monday trying to decide whether Greece should remain one of their group or be kicked out in an unprecedented setback to European unity.
Marathon talks that began Sunday afternoon centered on how debt-stricken Athens could reestablish enough trust with its European partners to win emergency loans from them worth billions of dollars. Countries such as Germany were pushing the Greek government to rush through new laws this week to show that Athens was serious in making its economy more competitive.