Overseas investment insurance is a non-profitable insur- ance provided by the government of a state for her enterprises which have invested in the developing countries or areas against political risks.Such a gov- ernmental guarantee system was first established in the United States in the middle of last century.Nowadays most developed countries and some of the developing countries have followed American practices and set up similar systems to encourage their enterprises to make investment in developing areas which are often regarded to be more easily to have political risks.In recent Overseas investment insurance is a non-profitable insur- ance provided by the government of a state for her enterprises which have invested in the developing countries or areas against political risks .uch a gov- ernmental guarantee system was first established in the United States in the middle of last century.Nowadays most developed countries and some of the developing countries have followed American practices and set up similar systems to encourage their enterprises to make investment in developing areas which are often considered as be more easily to have political risks.In recent