Compensation of transboundary environmental damages, especially in the case of hazardous activities is one of the complex issues of international environmental law. Sometimes in spite of taking all preventive measures, some authorized and legitimate activities of States that are generally dangerous can cause irreparable damages to other subjects of international law and especially to the environment. For as much as these activities are not prohibited, the traditional systems of civil responsibility are not effective when dealing with the compensation of environmental damages. Therefore, the development and codification of particular system of compensation for environmental damages is inevitable. The result of international community's effor...