The CISG governs international sales contracts if a) both parties are located in Contracting States, or (2) private international law leads to the application of the law of a Contracting State (although, as permitted by the CISG (article 95), several Contracting States have declared that they are not bound by the latter ground). The autonomy of the parties to international sales contracts is a fundamental theme of the Convention: the parties can, by agreement, derogate from virtually any CISG rule, or can exclude the applicability of the CISG entirely in favor of other law. When the Convention applies, it does not govern every issue that can arise from an