By Stefan Dolgert
Introduction
After more than two thousand years, the spectacle of the war between the Athenians and the Peloponnesians[1] still holds our imagination. Why this is so, or whether it is entirely healthy, contemporary scholars wrestle with the question of why this first war between “superpowers” occurred, and whether it could have been avoided by the policy makers of that time, had they simply learned the correct lessons from their past. It presents us with equal parts mystery and tragedy, and provides fertile ground for the ruminations of the historical consciousness. In addition it is the first historical event that presents itself, via its reporter Thucydides, as an open book for the scientific imagination. In searching out the causes of the war, and the laws of human nature that are revealed therein, the war promises us the chance to learn the real grounds of life, so that we may make ourselves as secure as possible from the shocks and catastrophes that fate might otherwise hold in store for us.
The Peloponnesian War is taken to be the paradigmatic example of war in the ancient world, but it is also looked to for lessons in the modern world. In particular, the resemblance between Athens and the United States has led many commentators to look to the Athenian experience to guide contemporary American policy. Two commercial republics, well-known for democratic practices at home and imperial pretensions abroad, Athens and the United States seemed to face a parallel set of dangers in their respective paths through the international arena. While this similarity was more pronounced during the Cold War, when the USSR appeared in the guise of Sparta, many today still look to ancient Athens, and to the lessons of Thucydides on the Peloponnesian War in particular, for guidance in matters of international policy.
Recent scholarship in International Relations has focused on the characteristics of Thucydides as a political thinker, rather than on the war itself. Realists and Constructivists have debated whether Thucydides is the father of political realism, as Realists from Waltz to Gilpin generally maintain, but have largely ignored assessing the underlying causes of the war, which are usually taken for granted (see Keohane, 1986, Garst, 1989, Clark, 1993, Bagby, 1994, and Forde, 1995, among others). Robert Keohane, for example, asserts that Thucydides was the first to set out the basic maxims of political realism: “(1) states (or city-states) are the key units of action; (2) they seek power, either as an end in itself or as a means to other ends; and (3) they behave in ways that are, by and large, rational, and therefore comprehensible to outsiders in rational terms” (Keohane 1986, 8). But the causes of the war itself modern International Relations has left to the province of the historians and classicists (see Kagan, 1970 and Ste. Croix, 1972 for a summary of the vast literature on this topic). It is this gulf which I hope to bridge. (more…)

Robert Keohane’s scholarship between 1970 and 1985 opened a new substantive area for inquiry. The work focused on new issues (international political economy, not international security), new actors (transnational actors, not states), new forms of interaction (transnational and transgovernmental relations, rather than interstate relations), new outcomes (international cooperation rather than international conflict), and new structures (international institutions, not pure anarchy). It advanced provocative hypotheses, most notably the claim that institutionalized cooperation persisted after the decline of postwar American hegemony. These aspects have been much discussed—and are treated in detail elsewhere in this volume.