What are the distinctive characteristics of international legal arguments?

International legal argument is not confined to legislation, since Article 38 of the ICJ Statute also includes custom and general principles, and legal reasoning cannot be reduced to State policy or mere rhetoric. So "They tend to be bound by the policies of states.", "They are limited to the scope of the legislation at hand." and "They are only rhetorical and not logical." all misdescribe it, and "None of the given options is correct"