Throughout the world, attaining peace and prosperity are clearly at the top of the agenda of human concerns; consequently, they are the most central and salient issues of politics and government. In the late twentieth century, however, no country can achieve these goals through its own actions alone. For all countries in this era of interdependence gaining peace and prosperity each require collective efforts. Thus domestic policies cannot be considered in isolation from foreign policies, and domestic politics are inextricably linked with international and ultimately world politics. Even if one were interested only in events within one's own country these would have to be put in a larger context to be properly understood, but most individuals adhere to ethical beliefs that mandate that their concerns extend certainly beyond their own countries’ borders, if not to all of humanity.