Abstract
To judge the ability of a country to support the external debt burden and reimbursement in the agreed deadlines his service; most of the economists used many ratios such as the stock of debt to GDP or GNP as well as to the debt service reported to exports or current revenue. These ratios are likely to express the degree of solvency of the indebted countries which allows creditors to ensure their reimbursement. This approach based on the solvency of debtors is only targeted toward the interests of lenders without taking into account the debtor countries. In this sense, a reasonable treatment on the question of debt require the rejection of the approach by the solvency, based only on the interests of creditors, and keep the approach by the sustainability, who refuses to sacrifice the satisfaction of basic needs of the populations of the indebted countries when they reimburse their external debt.
This approach propose another analysis of the sustainability of external debt and highlights that the debtors into paying the service of their debt through a drain on resources that it generates are that pay their debts to the detriment of the basic needs of
their population by a reduction in spending on education, health and infrastructure which can affect negatively their prosperity and good life.
