Just as Paul de Grauwe and others have said time and again, creditors need to restructure the debt of Greece or, in other words, to grant debt relief.
The United States thinks the same, as you can read in, e.g., this article Greek crisis: US urges Europe and IMF to find way to keep Greece in eurozone or may have read already -- for example, Obama's earlier plea fot debt relief to Greece.
Why is the US putting pressure on Germany and Ms Lagarde (a former finance minister of France)?
The answer is simple, and complex. But that's for a next post.