Articles

The defining question about global order for this generation is whether China and the United States can escape Thucydides’s Trap. The Greek historian’s metaphor reminds us of the attendant dangers when a rising power rivals a ruling power—as Athens challenged Sparta in ancient Greece, or as Germany did Britain a century ago. Most such contests have ended badly, often for both nations, a team of mine at the Harvard Belfer Center for Science and International Affairs has concluded after analyzing the historical record. In 12 of 16 cases over the past 500 years, the result was war. When the parties avoided war, it required huge, painful adjustments in attitudes and actions on the part not just of the challenger but also the challenged.

After World War II, "trading states" seemed to be charting a new path forward. But small was not beautiful. Even great powers found themselves negotiating larger markets through economic associations with others. It's time the United States became such a power.

"Military experts talk as if the president's decision about whether to send an additional 40,000 troops to Afghanistan is a make-or-break moment. In reality, his indecision about the deficit could matter much more for the country's long-term national security. Call the United States what you like-superpower, hegemon, or empire-but its ability to manage its finances is closely tied to its ability to remain the predominant global military power."

The Anglo-Japanese alliance of 1902–23 illustrates the importance of economic side payments as a method for forming and maintaining alliances. It also shows, however, the influence of domestic factors on constraining these types of payments. Security concerns often lead a nation to offer side payments to a potential ally, but domestic political constraints, partisanship, and changing strategic needs account for the variation in the economic-security linkage.

"As the American political system hurtles toward its quadrennial encounter with the oracle of democracy, it is worth our while to take stock of the country's place in a world beset by bewilderingly rapid change. (Heaven knows none of the candidates will bother to do this.) I want to suggest that an old yet generally neglected subject remains particularly relevant: the relationship between the size of political units and the effective scale of systems of economic production and exchange. Another way to describe this relationship is by recourse to the hoary scholarly phrase "political economy", a term of art that has unfortunately gone out of style...."

The path of transformation that the leaders of the Soviet Union can choose depends critically on the extent of Western engagement and assistance is critically dependent on the path of reform the Soviet Union is prepared to undertake.
Therefore, rather than each side waiting for the other to take the first step, the governments of the Soviet Union and the West should jointly develop a common program of what each would do if the other meets specific conditions.