Something that is owed by a person or organization, usually money, goods, or services. Debt usually occurs as a result of borrowing credit. Debt servicing is the payment of interest on a debt. The national debt of a country is the total money owed by the government to private individuals, banks, and so on; international debt, the money owed by one country to another, began on a large scale with the investment in foreign countries by newly industrialized countries in the late 19th-early 20th centuries. International debt became a global problem as a result of the oil crisis of the 1970s. As a result of the Bretton Woods conference in 1944, the World Bank (officially called the International Bank for Reconstruction and Development) was established in 1945 as an agency of the United Nations to finance international development, by providing loans where private capital was not forthcoming. Loans were made largely at prevailing market rates (`hard loans') and therefore generally to the developed countries, who could afford them. In 1960 the International Development Association (IDA) was set up as an offshoot of the World Bank to provide interest-free (`soft') loans over a long period to finance the economies of developing countries and assist their long-term development. The resulting cash surpluses of Middle Eastern oil-producing countries was channelled by western banks to Third World countries. However, a slump in the world economy, and rises in interest rates, resulted in the debtor countries paying an ever-increasing share of their national output in debt servicing (paying off the interest on a debt, rather than paying off the debt itself). As a result, many loans had to be rescheduled (renegotiated so that repayments were made over a longer term). In 1980-81 Poland ceased making repayments on international debts. Today, the countries most at risk include Mexico and Brazil, both of which have a debt-servicing ratio (proportion of export earnings which is required to pay off the debt) of more than 50%. vidual, company, or country owes more to others than they can repay or pay interest on; more specifically, the massive indebtedness of many Third World countries which became acute in the 1980s, threatening the stability of the international banking system as many debtor countries became unable to service their debts.