BERLIN (Reuters) - German Chancellor Angela Merkel said on Friday that Greece and its international creditors all needed to show a will to solve the country's debt problems and it was therefore important that everyone kept talking. "Where there's a will there's a way but the will has to come from all sides so it's important that we keep speaking with each other," Merkel told a conference of family business leaders in Berlin. (Reporting by Michelle Martin and Caroline Copley; editing by Erik Kirschbaum)