According to the realist orthodoxy, international relations are situated in the Hobbesian state of nature, which according to Hobbes is a state of war, and is thus devoid of justice or morality. In recent years, however, there has emerged among political theorists a new trend of revisionist interpretations which contend that Hobbes's political thought, if explored more thoroughly, is loaded with morality, especially in his exposition of the law of nature, and thus Hobbes's law of nature could be deemed a foundation of morality. This alternative interpretation is already well known in the study of political thought, but it is still not well accepted by the mainstream in the study of international relations (IR). The purpose of this paper is to defend this approach by drawing on theories in IR, so that it can become a resource for the theorizing of normative theory in IR.