Thomas Hobbes, On the Citizen (1642)

Hobbes’s contribution to international relations theory is, for all its significance, rather indirect. Hobbes sets out to give an account of the origin and preservation of internal political order. His practical intention is to foster peace, primarily within and only secondarily among nations. Yet Hobbes invites us to draw lessons about international relations from his political theory when he identifies the state that countries find themselves in as the state of nature. The way to Hobbes’s theory of international relations is therefore largely inferential in character.

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Polk, War Message to Congress (1846)

Although he was not the first to put his eyes on the territory west of the Louisiana Purchase, it was the presidency of James K. Polk (1845-1849) that put the finishing touches on the last major acquisition of new territory before the Civil War. A member of the Jacksonian-nationalist wing of the Democratic Party, Polk’s intentions were clear from the start—his famous campaign slogan, “54-40 or Fight!” indicated his intention to settle the status of the Oregon Territory with Great Britain on American terms. But even more famously associated with Polk is the Mexican-American War, and with it the acquisition of New Mexico and Upper California.

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Niccolo Machiavelli, The Prince (1532)

Few, if any, works of political philosophy have been more important for grand strategy and diplomacy than The Prince. Written by the Florentine philosopher and statesman, Niccolò Machiavelli (1469-1527), The Prince, along with Machiavelli’s other major work, Discourses on Livy, brought about a transformation in political theory and political practice.

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Xenophon, The Education of Cyrus (ca. 370 BCE)

The Education of Cyrus is no simple paean to Cyrus, nor a handbook showing how to rule the world. Xenophon meditates on the conditions of uniting independent nations under unified political leadership, and the costs of so doing. The possession of empire can be as detrimental to the rulers as it is to the ruled. The Persians were once much like the Spartans, but they were changed by the rule of Cyrus. Xenophon thus shows that little is “natural” in the superior qualities of Greek soldiers when compared against the Persians. Keeping independent and separate political communities, with the attendant possibility of war and instability, seems very much wrapped up with the virtues necessary for successful warfare. The choice between empire and independence is one of the most fundamental political choices, and Xenophon deftly shows the Greeks and the later world the costs, limits, and possibilities of becoming an imperial power.

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Geography and World Politics

Becoming the world's only superpower can cause strange dreams. In the case of the United States, which achieved this status over 20 years ago, many who should know better have dreamed that economic interdependence, multilateral institutions, technological change, global democratization, the rise of non-state actors—even Barack Obama's charming personality—will have a transformational effect on world affairs, rendering irrelevant the geopolitics underlying American national security. But geopolitical competition between major world powers obviously continues, and these dreams, which are recognizably liberal dreams, remain delusive and dangerous.

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Of Geography and Politics

If statesmanship or the political art is synonymous with the art of war or the art of acquisition on the grandest scale, then mastery of geography becomes "the first part" of the statesman's arsenal. "[H]e should learn the nature of sites, and recognize how mountains rise, how valleys open up, how plains lie, and understand the nature of rivers and marshes—and in this invest the greatest care.… And the prince who lacks this skill lacks the first part of what a captain must have." If the "desire to acquire" or the "lust for power" is inherently unlimited and is the governing principle of politics, then the primary concern of politics with geography, the concern with acquisition of territory, in principle knows no bounds. The concern of politics with geography, at a certain point in history, expanded its scope, not just in principle but in fact, to encompass the world.

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