Traditionally, Ethical realism holds that moral facts exist. The term also describes the theory that in fact it is never possible to make good choices as sin is present in all people and therefore we ultimately have to choose between the lesser of two evils.
a theory of international relations that emphasizes states’ interest in accumulating power to ensure security in an anarchic world; based on the notion that individuals are power seeking and that states act in pursuit of their own national interest defined in terms of power (67)
Realism, also known as political realism, in the context of international relations, encompasses a variety of theories and approaches, all of which share a belief that states are primarily motivated by the desire for military and economic power or security, rather than ideals or ethics. This term is often synonymous with power politics.