Liberalization their logging services makes the concept of cabotage which was known in the field IntisariAdanya Liberalisasi jasa penebangan menjadikan konsep cabotage yang tadinya dikenal dalam bidang pelayaran, kini menjadi bagian dalam bidang penerbangan. Situasi demikian bila dikaitkan dengan konsep kedaulatan negara di ruang udara, secara yuridis telah menimbulkan persinggungan yang cukup serius. Pada negara yang belum menerima konsep cabotage udara, sering ditemukan penyelundupan hukum cabotage udara. Sehingga mengharuskan pemerintah negara yang bersangkutan melakukan tindakan yuridis dalam rangka melindungi perusahaan penerbangan nasionalnya, termasuk Pemerintah Indonesia.

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<p><em>The use of force against other countries is strictly prohibited and has the character of jus cogens. However, this provision is not rigidly applied in the self-defence context codified in the United Nations Charter 1945 Article 51, also in the air defence context through the existence of the Air Defence Identification Zone (ADIZ). This research discusses whether ADIZ embodies the anticipatory efforts in the framework of customary international law. The research r</em><em>esults indicate<em> that the determination of ADIZ is not a form of self-defence principle in Article 51, which is the realm of jus ad bellum. Moreover, the conservative self-defence prerequisites in Article 51 are no longer relevant in line with the revolutionary development of aviation and its armament technology. Therefore, ADIZ, as a state security practice, constitutes a form of anticipatory efforts within the framework of long-standing state practice as customary international law. Furthermore, the use of force for violators is limited by Article 3 bis of the Chicago Convention 1944 and the Standard and Recommended Practices.</em></em></p>

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This article aims to explore the dynamics of rebus sic stantibus principle in international treaty. How are experts perspective and international law regulate about this principle, and how the implementation of principle in international society. Rebus sic stantibus principle may be invoked as a ground for terminating or withdrawing or suspending the enactment of international treaty.  Tulisan ini menelaah dinamika asas rebus sic stantibus dalam perjanjian internasional. Bagaimana pandangan para ahli terhadap asas ini, bagaimana hukum internasional mengaturnya, dan bagaimana penerapan asas ini dalam kenyataannya di masyarakat internasional. Asas rebus sic stantibus dapat dijadikan sebagai dasar untuk mengakhiri atau menarik diri atau menunda atas berlakunya suatu perjanjian internasional.