Grand strategy: Alliances
Key points
- Alliances are usually temporary arrangements among states to counter—or “balance” against—a specific common threat. The United States’ Cold War alliances, by contrast, have become seemingly permanent.
- States tend to balance power when they face a major threat. Bandwagoning, by contrast, is a particularly poor option for states with the capability to put up a fight. When threatened, states tend to join forces in alliances rather than surrender their national survival to the whims of a more powerful aggressor.
- Alliances, however, entail costs and risks. These include the dangers of being drawn into war through entanglement and entrapment, the deleterious effect on deterrence by allies that neglect their defense by “free-riding,” and the moral hazard produced by enabling allies to act like “reckless drivers.”
- Over time, the United States has shifted from a deep skepticism of “entangling alliances” to a global network of security dependents that are treated as an end in themselves, rather than a means to an end. This posture has left the United States overextended, while encouraging allies to neglect their own capabilities and preparedness.
- The United States can and should significantly reduce its alliance commitments, particularly in Europe and the Middle East, where threats to the U.S. are remote and local powers can balance adversaries. In Asia, the United States should act as a backstop to the regional balance of power rather than a vanguard.