LA PAZ Bolivia , battling an economic crisis that has plunged it into social unrest, risks defaulting on its loan payments if it does not obtain new foreign financing, President Luis Arce has told AFP. "We are trying not to default. We have every intention of paying our debt, but if we don't have the resources?" the embattled leader said in an interview in his office in La Paz. Bolivia's external debt stands at $13.3 billion. Its main creditors are the Inter-American Development Bank, the