Realism explains military and security issues well enough, but underestimates the influence of global connectedness on peace and stability; It also ignores the influence of non-state actors. Liberalism, on the other hand, focuses on the global enterprise, economically and culturally, but is still not sufficient to explain the problems of terrorism, ethical conflict, sexism and international conflict. In fact, each international theory focuses only on one perspective, so there will be no international theory that can be used to explain all international phenomena. In other words, there will be no single theory capable of providing the best compass for formulating foreign policy in every context