1. Compare, establish the common and specific criteria of the 4 theories of dating of the occurrence of International law . 2. Establish the essence of the criterion of state sovereignty and the nature of the international law as an interstate law as an argument to justify and deny the legally binding force of this law. 3. Compare peculiarities of emergence and formation of the international law and domestic legal systems. 4. Compare the criteria, establish common and specific historical periodization of the international law