8 December 2021

Stabilizing Great-Power Rivalries

Michael J. Mazarr, Samuel Charap, Abigail Casey, Irina A. Chindea

The consensus inside and outside the U.S. government is that the international system is headed for a renewed era of intense and sometimes bitter competition among leading states. The objective of this research was to assess the emerging strategic competitions between the United States and both China and Russia, examine the approaches most likely to preserve long-term stability in these competitions, and draw implications for Army capabilities and posture. To this end, the authors reviewed existing literature on rivalries, identifying variables strongly associated with stability and instability, and, based on that research, developed a framework for assessment of such rivalries. They then applied this framework to historical cases of bilateral rivalries to identify the most important factors. Finally, they leveraged this work to assess the current state of U.S.-Russia and U.S.-China relations. Their assessment suggests that there are serious grounds for concern about the stability of both the U.S.-Russia and U.S.-China rivalries. While certain contextual factors, such as mutual strategic vulnerability, will remain buffers of conflict, many of the warning signs for instability are clearly visible, and the future seems likely to be even more volatile. The report offers recommendations for the U.S. government and the U.S. Army, in particular, to manage this challenging new era of competition. One overarching theme identified is that to ensure stability—and avoid war—the policy response to this intensified great-power competition should be nuanced and go beyond merely bolstering capabilities to counter rivals.

Key Findings

Stable Rivalries Are Associated with a Number of Key Factors

Stable rivalries are defined by two key characteristics: the mutual acceptance of a shared status quo and a resilient equilibrium to absorb shocks and weather discontinuities.

Historical and theoretical analysis suggests that stability is a function of the conditions that underlie the stability of a rivalry, including both contextual and policy factors and the key strategic perceptions of the rivals.

The U.S.-Russia and U.S.-China Rivalries Show Dangerous Signs of Instability

The vast majority of the key factors that were assessed for this report are driving both the U.S.-China and U.S.-Russia rivalries toward instability rather than stability.

The sole stabilizing factors at the moment relate to the mutual possession of deterring military power and the potentially devastating consequences of any conflict.

The United States Has Policy Options to Stabilize These Rivalries

The United States could seek to stabilize one or more of these rivalries if it chose; it has many potential policy options to do so.

These options range from symbolic status-granting steps to more concrete crisis-management and confidence-building measures.

Recommendations

Consider the unintended effects of military capability decisions. The deterrent effect of capability decisions is only half of the equation. When making decisions about posture or capability development, the United States should also consider their effects on stability.

Take seriously the need to develop formal and informal rules of the road. Historical evidence highlights the importance of rules and agreements to stabilize rivalries.

Shape the international system to magnify its constraining effects. U.S. policy should seek to sustain and, where possible, deepen the set of norms and institutions the United States has helped create since 1945, which have served as a stabilizing ballast in the international system by making international status contingent on some degree of restraint.

Seek opportunities for mutual transparency, notification, and arms control. These formal agreements would go beyond the rules of the road mentioned earlier to limit the deployment of new capabilities and create mechanisms to reduce uncertainty.

Look for ways to grant rivals increased status in exchange for creating a trade space for arrangements that would serve U.S. interests and enhance stability. If the United States is willing to offer signifiers of status in, for example, international institutions, it could both create a trade space for achieving other goals and reduce the incipient instability of the two rivalries.

The U.S. Army will serve the nation's interests most effectively if it continuously thinks in terms of stabilizing the rivalries rather than merely providing capabilities to threaten the adversary.

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