30 May 2025

The Case for a Pacific Defense Pact

Ely Ratner

The time has come for the United States to build a collective defense pact in Asia. For decades, such a pact was neither possible nor necessary. Today, in the face of a growing threat from China, it is both viable and essential. American allies in the region are already investing in their own defenses and forging deeper military bonds. But without a robust commitment to collective defense, the Indo-Pacific is on a path to instability and conflict.

Tactical shifts aside, Beijing’s geopolitical aspirations for “the great rejuvenation of the Chinese nation” remain unchanged. China seeks to seize Taiwan, control the South China Sea, weaken U.S. alliances, and ultimately dominate the region. If it succeeds, the result would be a China-led order that relegates the United States to the rank of a diminished continental power: less prosperous, less secure, and unable to fully access or lead the world’s most important markets and technologies.

After decades of pouring resources into its armed forces, China could soon have the military strength to make that vision a reality. As CIA Director William Burns revealed in 2023, Chinese President Xi Jinping has instructed his military “to be ready by 2027 to invade Taiwan.” But as Burns went on to note, China’s leaders “have doubts about whether they could accomplish that invasion.” To sustain those doubts—concerning Taiwan but also other potential targets in the region—should be a top priority of U.S. foreign policy. That requires convincing Beijing that any attack would ultimately come at an unacceptable cost.

With that objective in mind, the United States has invested in advanced military capabilities and developed new operational concepts. It has moved more mobile and lethal military forces to strategic locations across Asia. Crucially, it has overhauled its security partnerships in the region. In past decades, Washington’s principal focus was to forge close bilateral ties. In recent years, by contrast, the United States has pursued a more networked approach that gives U.S. allies greater responsibilities and encourages closer ties not just with Washington but among the allies themselves. These changes are creating novel military and geopolitical challenges for Beijing, thereby reinforcing China’s doubts about the potential success of aggression.

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