In other words, true realism is an art more than a science, in which the temperament of a statesman plays as much of a role as his intellect. While the roots of a realism hark back 2,400 years to Thucydides' illusion-free insights about human behaviour in The Peloponnesian War,
modern realism was perhaps most comprehensively summed up in 1948 by Hans J. Morgenthau in Politics Among Nations: The Struggle for Power and Peace..., the effort of a German refugee who taught at the University of Chicago, in order to set the stage for my larger discussion about
geography: for realism is crucial to a proper appreciation of the map, and in fact, leads us directly to it. Morgenthau begins his argument by noting that the world "is the result of forces inherent in human nature," And, human nature, as Thucydides pointed out, is motivated by fear (phobos), self-interest (kerdos), and honour (doxa).
"To improve the world, "writes Morgenthau," one must work with these forces, not against them." Thus, realism accepts the human material at hand, however imperfect that material may be.
"It appeals to historical precedent rather than to abstract principles and aims at the realization of the lesser evil rather than of the absolute good." For example, a realist would look at Iraq's own history,
explained through its cartography and constellations of ethnic groups, rather than to moral precepts of Western democracy, to see what kind of future Iraq would be immediately capable of following the toppling of a totalitarian regime. After all, good intentions have little to do with positive outcomes according to Morgenthau.
In the passage, one of the arguments is "Тo improve the world, one must work with these forces, not against them." Choose the forces referred to in this context.