As the United States scales back its security commitments around the world—and at times acts in concert with Israel in ways that critics argue further destabilize regions—an increasingly urgent question confronts other nations: how to ensure their own security.

Many countries are responding by expanding their domestic military capabilities and forging or strengthening alliances that do not depend on U.S. backing. Japan has committed to roughly doubling its defense budget to two percent of GDP by 2027, a historic break from its postwar posture, while Germany established a €100 billion special defense fund and raised its military spending toward NATO's two-percent target. In the Indo-Pacific, newer configurations such as the AUKUS security pact and the Quad dialogue reflect efforts to build deterrence frameworks that, while still involving the U.S., spread responsibility more broadly. The trend reflects a broader shift in the global order, one in which the post–Cold War assumption of sustained American security primacy can no longer be taken for granted.

Some governments had expected—or at least hoped—that China would emerge as a new regional security guarantor, filling the role once played by the United States. The logic follows a well-established historical pattern: Rome, Britain, and the United States each served as dominant global powers providing security frameworks. By that reasoning, the next great power might naturally assume a similar role. However, current evidence suggests this transition is not materializing:

China's reticence aligns with its long-standing foreign policy doctrine of non-interference in other nations' internal affairs and its comparatively limited overseas military footprint. The People's Liberation Army maintains a single acknowledged overseas base, in Djibouti, and Beijing has consistently framed its global role primarily in economic rather than security terms, prioritizing trade partnerships and infrastructure investment over military alliances or forward deployments. Gulf states in particular have pursued what analysts describe as a hedging strategy—deepening commercial ties with China and security dialogues with Russia while maintaining their longstanding U.S. military relationships, rather than transferring allegiance wholesale.

Analysts caution that China's present reluctance to serve as a regional security guarantor does not necessarily mean this will hold indefinitely. Even so, historical precedent offers a sobering lesson: transitions from one international hegemon to another have frequently been accompanied by periods of conflict and upheaval. The prospect of moving from an era defined by a dominant security provider to one with no clear successor carries significant risk.

Compounding these concerns is the backdrop of mounting resource insecurity. Water scarcity, food supply disruptions, and energy instability are intensifying across multiple regions. Without a major military power willing or able to mediate conflicts and enforce stability, the potential for escalation grows. Observers note that global conflict levels are already trending upward.