The word international, it must be acknowledged, is a new one; though, it is hoped, sufficiently analogous and intelligible. It is calculated to express, in a more significant way, the branch of law which goes commonly under the name of the law of nations: an appellation so uncharaeteristic, that, were it not for the force of custom, it would seem rather to refer to internal jurisprudence. The chancellor D'Aguesseau has already made, I find, a similar remark (Œvres, Tom. ii. p. 337, edit. 1773, he says that what is commonly called droit des gens, ought rather to be termed droit entre les gens.

IPML Chapter 17 Section 2