Termination of Collective Defense Treties – Procedures, Consequences and Modern State Practice

State practice has showed that geopolitical interests of nations are usually engaged either through diplomatic or military means. The mutual desire to avoid armed conflicts led to concluding multiple multilateral and bilateral international security and defence treaties. This process formed the basis of two major concepts -the Collective security and the collective defense. Both of them require a solid international legal basis, namely - a treaty that settles all forms of interpretations, disputes and actions. Since these treaties define international relations for a certain period, their eventual termination would have a major impact on the relations between different nations as seen numerously in the past decades. The contemporary world has completely different challenges to ensure collective security in the framework of international organizations. Currently major military actors are guarding the national sovereignty and aerospace borders of smaller states, thus making air policing a real diplomatic issue that should face an international legal framework. The institutional interaction between NATO and the EU as international organizations could lead to complete integration in terms of defense of the EU Member states in the near future. These issues could and should be met with the means of the main sources of the Law of treaties