The starting point of the answer to the question about the territorial scope of Article 10 of the Basic Law is Article 1.3 of the Basic Law, which determines the scope of the application of the fundamental rights in general. The fact that this regulation provides that the fundamental rights bind the legislature, the executive and the judiciary in a comprehensive way, does not, however, result in a final determination of the territorial scope of application of the fundamental rights. The Basic Law does not content itself with defining the internal order of the German state but also determines the essential features of the German state's relationship to the community of states. In this respect, the Basic Law assumes that a delimitation between states and legal systems is necessary, and that co-ordination between states and legal systems is also necessary. On the one hand, the scope of competence and responsibility of organs of the German state must be taken into account when determining the scope of application of the fundamental rights (cf. BVerfGE 66, p. 39 [at pp. 57 et seq .]; BVerfGE 92, p. 26 [at p. 47]). On the other hand, constitutional law must be co-ordinated with international law. International law, however, does not, in principle, preclude the validity of fundamental rights in matters that bear on relations with foreign countries. The territorial scope of the fundamental rights, however, must be drawn from the Basic Law itself, taking into account Article 25 of the Basic Law. When doing so, modification and differentiation may be permissible or required, depending on the relevant rules of constitutional law (cf. BVerfGE 31, p. 58 [at pp. 72 et seq .]; BVerfGE 92, p. 26 [at pp. 41-42]).