In the historical debate on how best to achieve national security, writers like Hobbes, Macchiavelli, and Rousseau tended to paint a rather pessimistic picture of the implications of state sovereignty. The international system was viewed as a rather brutal arena in which states would seek to achieve their own security at the expense of their neighbors. Inter-state relations were seen as a struggle for power, as states constantly attempted to take advantage of each other. According to this view, permanent peace was unlikely to be achieved. All that states could do was to try to balance the power of other states to prevent any one from achieving overall hegemony. This view was shared by writers such as E.H. Carr and Hans Morgenthau.