CHRISTOPHER MCCALLION
THE GEOGRAPHY OF RESTRAINT
Distance continues to provide benefits to defense while raising the costs of offense, especially for those states seeking to sustain territorial conquest. The United States is uniquely favored by its geography, which contributes enormously to its abundant security. At the same time, however, the combination of geographic distance and developments in military technology are making it harder for the United States, or any state, to project power to distant regions of the world. Fortunately, these circumstances also make the pursuit of regional hegemony and aggression by rivals less achievable, rendering threats to vital U.S. security interests even more remote. The same factors that complicate the United States’ ability to carry out large land wars in Eurasia, in other words, also diminish the threats the United States might conceivably face that would justify such a commitment.
The combination of geography and technology should thus make the United States more judicious in its military commitments, while also encouraging optimism regarding threats that adversaries might pose. This is good news the United States should embrace by adopting a grand strategy of restraint.
The following explainer will first review some concepts in geopolitics: namely, how proximity and land borders tend to produce security competition; how geography and national resources interact with the distribution of power among states; and how distance continues to be—and in some ways may be more than ever—an obstacle to power projection abroad. Next, it will examine the particular geopolitical circumstances of the United States and how geography has both benefited and frustrated U.S. grand strategy over the past century. Finally, it will explain how these circumstances lend themselves to a grand strategy of restraint, which leans into the United States’ geographic advantages, its unique position as a maritime power insulated from the exigencies of great power competition on the Eurasian landmass, and the advantages conferred on defense by developments in military technology.
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