“Thus far the chief purpose of our military establishment has been to win wars. From now on its chief purpose must be to avert them. It can have almost no other useful purpose.”[i]

— Bernard Brodie
The Absolute Weapon: Atomic Power and World Order (1946)

Introduction

The global strategic environment is shifting from the post-Cold War era of loose unipolarity to an era of competitive multipolarity. Nowhere is this transformation more consequential than in the Indo-Pacific, where multiple nuclear-armed states converge amid rising tensions, rapid military modernization, and the erosion of arms-control norms.

For the United States, this evolution challenges assumptions forged in a largely bilateral Cold War context. China’s ascent, North Korea’s unpredictability, the volatility of the China–India–Pakistan triangle, and Russia’s growing entanglements across the region complicate both the credibility and successful implementation of deterrence and extended deterrence.

In this environment, signaling resolve, preserving second-strike survivability, and managing escalation have become more demanding. Diffused power heightens the risk of miscalculation, weakens the clarity of bilateral signaling, and raises the likelihood that localized crises may overlap or cascade. The central strategic task is therefore to assure allies and deter adversaries while avoiding arms races and inadvertent escalation.

The core claim of this chapter is straightforward: the United States can sustain credible strategic deterrence in a nuclearized, multipolar Indo-Pacific not by matching rivals weapon for weapon, but by reinforcing stability through the three Cs: capability, grounded in survivable second-strike forces; communication, anchored in disciplined and coherent signaling; and commitment, demonstrated through practical guardrails and alliance integration that reassure partners while constraining escalation.

Finally, while South Asia lies outside the U.S. extended deterrence umbrella, preventing a nuclear exchange among China, India, and Pakistan remains strategically vital. Such conflict would generate profound uncertainty across the Indo-Pacific and could undermine deterrence stability well beyond the subregion. Accordingly, this chapter also examines U.S. options for enhancing strategic stability in South Asia as a necessary complement to deterrence elsewhere in the Indo-Pacific.

https://doi.org/10.71236/kvgqcn30