CHAPTER 9
THE GLOBAL SECURITY STRUCTURE
Overview
Robert Kaplan’s words in the epigraph to the chapter capture the feelings of many realists and
neorealists who are perplexed by policies of U.S. president Donald Trump that appear to be
designed to tear down the world order established by the United States and its allies after
World War II. Trump has continually attacked NATO, the WTO, the G-7, and the G20, and in
May 2018 he declared that he was pulling the United States out of the Iran nuclear deal. In his
verbal jousting with North Korea’s Kim Jong-Un, he has on several occasions said that
nuclear war may be necessary if Kim does not completely denuclearize his country. Since the
Cuban Missile Crisis, talk of starting a nuclear conflict has been regarded as irrational.
Many experts are also disconcerted by Trump’s admiration for nationalist populist leaders
who have weakened democratic institutions. He has started trade wars while giving little
attention to human rights or the consequences of his actions. He admits to only thinking about
how he “feels” about something and is not afraid to reverse himself. These decision-making
In this chapter we discuss classical realism and neorealism, putting them into perspective with
mercantilism, neoliberalism, structuralism, and constructivism. We provide historical
overviews of the global security structures that correspond to the three phases of the postwar
order (discussed in Chapter 1). We also shed light on how and why each of these
configurations of military power and economic wealth has shifted over time to produce a new
structural arrangement that still reflects some elements of the structure before it. We contend
that in the global security structure today actors are less constrained by an international
systemic structure than they were during the Cold War.
We then explore chronologically some recent security dilemmas that the major powers have
dealt with such as the U.S. invasions of Afghanistan and Iraq. Traditional security issues such
as conventional war and the prevention of nuclear war have increasingly been supplanted by