An overview of the present state of international law in theory and practice, its historic roots and development, the relationship between international agreements and international law, international law since the end of the "Cold War," and the need to reform Ukrainian law in the area of international agreements. Section headings: Concept and roots of the law of international agreements. Rise and development of the law of international agreements. The binding power of international agreements. Subjects of international agreements. Objects and forms of international agreements. The law of international agreements as a system. The international agreement and other sources of international law. Procedure for drawing up international agreements in Ukrainian practice. International agreements in Ukrainian national law.