International law in general — Sources — UNESCO deliberations — Convention adopted for the protection of the cultural heritage of peoples — Extent to which they demonstrate consensus in international community for the purposes of determining internationalpublic policy — The law of the Federal Republic of Germany

Treaties — Conclusion and operation of — Effect of treaties on third parties — Evidence of consensus in international community for the purposes of determining international public policy — UNESCO Convention for the protection of the cultural heritage of peoples — The law of the Federal Republic of Germany

Jurisdiction — In general — Territorial — Territorial limits of jurisdiction — Foreign legislation prohibiting export of items forming part of cultural heritage — Whether effect to be given to such legislation in forum State — Insurance contract relating to export of such items — Whether void — Public policy — UNESCO Resolutions and Convention regarding protection of cultural heritage of peoples — Effect of Convention on third parties — Evidence of consensus in international community on subject matter — The law of the Federal Republic of Germany