Hans Morgenthau's Politics Among Nations is a classic of political
science, built on the firm foundation of Morgenthau's watertight
reasoning skills.
The central aim of reasoning is to construct a logical and persuasive
argument that carefully organizes and supports its conclusions - often
around a central concept or scheme of argumentation. Morgenthau's
subject was international relations - the way in which the world's
nations interact, and come into conflict or peace - a topic which was of
vital importance during the unstable wake of the Second World War. To
the complex problem of understanding the ways in which the post-war
nations were jostling for power, Morgenthau brought a comprehensive
schema: the concept of "realism" - or, in other words, the idea that
every nation will act so as to maximise its own interests. From this
basis, Morgenthau builds a systematic argument for a pragmatic approach
to international relations in which nations seeking consensus should aim
for a balance of power, grounding relations between states in
understandings of how the interests of individual nations can be
maximized.
Though seismic shifts in international politics after the Cold War
undeniably altered the landscape of international relations,
Morgenthau's dispassionate reasoning about the nature of our world
remains influential to this day.