External debt - IMF
Provision of export credit guarantee or insurance against risks of payment delays or nonpayments relating to export transactions. Cover is usually, though not always, provided for both commercial risk and political risk. In most cases, cover is not provided for the full value of future debt-service payments; the percentage of cover is typically between 90 percent and 95 percent.
International Monetary Fund (IMF), "External Debt Statistics: Guide for Compilers and Users; Appendix III. Glossary of External Debt Terms", Washington D.C., 2003