the necessary and voluntary
law of nations as well as conventional and customary agreements between states – which is beyond the scope of this blog post. Suffice to say that bilateral agreement was insufficient proof of general applicability. Especially considering that back then
approaches to international
law were quite diverse: “where the inference from the
law of nature is not clear, each nation must be allowed its own interpretation of that
law, with the result that in some instances the strict precepts of the
law of nature may be evaded”....