The Indo-Pacific Doesn’t Need More Bases. It Needs More EDCAs.
As Washington searches for a sustainable Indo-Pacific posture, the Philippines has already built a model worth exporting.
The Pentagon is spending billions of dollars to prepare for a potential conflict in the Indo-Pacific. Yet Washington’s most important strategic challenge may not be acquiring another ship, missile, or aircraft. It may be securing access. Weapons matter, but access determines whether those capabilities can be employed when and where they are needed most.
The United States cannot effectively deter aggression or sustain military operations across the vast distances of the Indo-Pacific without a resilient network of partners willing to provide access, logistics, and infrastructure. At the same time, many regional states remain unwilling to host permanent American bases. This creates a strategic paradox: The United States needs a larger operational footprint, but its partners often want a smaller political one.
The solution may already exist.
The most important lesson of the 2014 Enhanced Defense Cooperation Agreement (EDCA) between the United States and the Philippines is that politically sustainable access depends on addressing sovereignty concerns, not just military requirements. By allowing rotational access, prepositioned equipment, and infrastructure investment without establishing permanent U.S. bases, EDCA has strengthened alliance readiness while preserving Philippine sovereignty.
Much of the discussion surrounding EDCA focuses on the Philippines. That misses the larger story. The agreement’s greatest strategic value is not what it does for Manila, but what it offers the rest of the region: a conceptual breakthrough proving that defense cooperation must be structured around local political realities. As Washington searches for ways to strengthen its position along the First Island Chain and beyond, the question is no longer whether EDCA works. The more important question is whether the United States can export it.
Why EDCA Works
The U.S.-Philippine alliance has always been constrained by politics as much as strategy. The 1987 Philippine Constitution prohibits permanent foreign bases, a legacy of domestic opposition that led to the closure of Clark Air Base and Subic Bay in the early 1990s. American and Philippine policymakers, therefore, required a framework that could preserve alliance effectiveness while respecting constitutional and political realities. EDCA provided that solution, and its legality was later affirmed by the Philippine Supreme Court.
The agreement allows rotational deployments, prepositioned materiel, joint training, and infrastructure development at designated Philippine facilities that remain under Philippine ownership. Rather than recreating Cold War-era installations, EDCA creates a distributed network of access points. This approach increases military flexibility while maintaining political legitimacy.
From an operational perspective, the benefits are substantial. Dispersed access across multiple locations complicates adversary targeting, accelerates crisis response, and improves sustainment in contested environments. Infrastructure investments enhance both military readiness and disaster-response capabilities. Prepositioned equipment reduces deployment timelines and increases the credibility of allied responses during regional contingencies.
Most importantly, EDCA strengthens deterrence without requiring permanent stationing of large foreign forces. This distinction matters. Many Indo-Pacific states want stronger security cooperation with the United States but remain politically unwilling to host permanent American bases. EDCA bridges that gap.
The Limits of Deterrence
EDCA has improved the strategic position of both Washington and Manila, but its achievements should not be overstated.
China has not been deterred from continuing coercive activities in the South China Sea. Beijing continues to pressure Philippine vessels, challenge maritime claims, and oppose the expansion of alliance activities. The agreement raises the operational costs associated with Chinese escalation, yet it has not fundamentally altered Beijing’s strategic objectives.
The reason is straightforward. Access agreements create capability, but effective deterrence also depends on perceptions of political resolve. For much of the past decade, Philippine domestic politics generated uncertainty regarding the durability of alliance commitments. During Rodrigo Duterte’s presidency, EDCA implementation slowed amid efforts to improve relations with Beijing. Under Marcos, alliance cooperation expanded significantly, including the expansion of EDCA from five to nine agreed locations. These swings illustrate an uncomfortable reality: Alliance credibility can fluctuate with domestic political leadership.
The lesson for policymakers is not that EDCA fails. Rather, it demonstrates both the strengths and limits of military access agreements. They improve readiness, responsiveness, and operational flexibility. They cannot by themselves overcome political uncertainty or compel a determined adversary to abandon core interests.
Still, effective deterrence does not require perfection. It requires improving the balance of advantages. By that standard, EDCA has succeeded.
Sovereignty Is the Decisive Variable
The most important insight from the Philippine experience is that sovereignty concerns — not military requirements — often determine whether defense agreements are politically sustainable. If a host nation feels its autonomy is compromised, even the most strategically effective military agreement will eventually collapse under domestic pressure. EDCA survived because it was carefully designed to address Philippine sensitivities. Facilities remain Philippine-owned. Access occurs through mutually agreed arrangements. Activities are tied to specific locations. The agreement avoids the symbolism associated with foreign bases while preserving practical military utility.
That design has not eliminated controversy. Critics continue to argue that expanded U.S. access increases the risk of entrapment in a future conflict, particularly one involving Taiwan. Debate regarding sovereignty remains a persistent feature of Philippine politics. Governors, legislators, and civil society organizations periodically challenge aspects of implementation.
Yet the agreement has endured because it preserves visible host-nation control. Political legitimacy derives not from legal language alone but from the perception that Philippine leaders retain authority over access and activities.
This principle offers an important lesson for the wider Indo-Pacific. Security cooperation cannot be imposed. It must be structured around local political realities. Agreements that appear operationally efficient from Washington may prove politically unsustainable if they neglect sovereignty concerns.
The Indo-Pacific Demand for Flexible Access
The strategic environment increasingly favors EDCA-style arrangements.
The United States requires a more distributed posture, consistent with the objectives outlined in the 2023 Bilateral Defense Guidelines. Large, concentrated bases remain valuable but are increasingly vulnerable to precision strike systems. Dispersed networks of access, logistics hubs, prepositioned materiel, and partner-owned facilities provide greater resilience.
At the same time, many Indo-Pacific governments seek stronger security relationships without joining formal alliances or accepting permanent foreign military presence. They want capability improvements, humanitarian assistance, training opportunities, and enhanced maritime awareness while preserving freedom of action.
EDCA occupies the space between these preferences. It offers meaningful military cooperation without requiring either side to make politically difficult commitments associated with permanent basing.
The result is a model increasingly relevant across the region.
Where the Model Could Travel
Exporting EDCA does not mean replicating the Philippine agreement word-for-word. Instead, it means adapting its core principles to local conditions.
Vietnam
Get Blancaflor’s stories in your inbox
Join Medium for free to get updates from this writer.
Vietnam may be the strongest candidate for an EDCA-inspired arrangement.
Hanoi has steadily deepened security cooperation with Washington while maintaining its longstanding preference for strategic autonomy. Vietnam’s strict adherence to its “Four Noes” defense policy — which explicitly forbids foreign military bases or alliances — makes traditional basing impossible. Vietnamese leaders consistently avoid formal alliances and remain sensitive to anything suggesting foreign basing. At the same time, concerns about Chinese behavior in the South China Sea continue to drive interest in practical defense cooperation.
An EDCA-style framework centered on invitation-based access, logistics support, maintenance activities, and occasional prepositioning could expand cooperation without crossing Hanoi’s political red lines. Cam Ranh International Port is particularly attractive because Vietnam already uses it as a hub for international naval engagement while maintaining sovereign control.
Indonesia
Indonesia presents a different but equally important opportunity.
Jakarta traditionally embraces strategic nonalignment through its “bebas aktif” (free and active) foreign policy and is unlikely to support arrangements resembling permanent military access. However, Indonesia has demonstrated growing interest in defense cooperation, including its recent Defense Cooperation Arrangement with the United States.
An Indonesian version of EDCA would likely focus on exercises, logistics, surveillance support, and resilience investments rather than dedicated access facilities. Because domestic sensitivities regarding foreign interference run deep in Indonesian politics, the focus must remain squarely on capacity-building rather than U.S. power projection. The Natuna Islands offer unique strategic value because of their location near contested maritime areas and Indonesia’s growing efforts to strengthen outer-island defense capabilities.
India
India already operates under a logic that parallels several EDCA principles.
A series of foundational agreements with the United States enables logistics cooperation, information sharing, and interoperability while preserving Indian strategic autonomy. New Delhi remains unlikely to embrace anything resembling a traditional alliance, but it has demonstrated increasing openness to practical security cooperation.
An EDCA-style framework focused on rotational activities, sustainment, disaster response, and logistics could complement existing arrangements. Given India’s historic leadership in the Non-Aligned Movement, an explicit guarantee of host-nation veto power over any U.S. operation would be a prerequisite. Facilities in the Andaman and Nicobar Islands would enhance operational flexibility throughout the eastern Indian Ocean while remaining fully consistent with India’s preference for sovereign control.
Pacific Island Partners
Even small states may benefit from elements of the model.
Many Pacific Island nations face chronic infrastructure and disaster-response challenges while simultaneously navigating strategic competition between major powers. Limited-access agreements focused on resilience, humanitarian assistance, and emergency logistics could provide tangible benefits without creating politically controversial military footprints.
Success, however, would require careful diplomacy. Pacific governments are highly sensitive to perceptions that they are becoming instruments of great-power competition.
Political Obstacles
While the EDCA framework offers a promising blueprint, attempting to adopt similar agreements elsewhere faces steep political hurdles.
Critics might rightly argue that many regional states fear economic retaliation or diplomatic coercion from Beijing, which consistently characterizes any expansion of U.S. access as destabilizing and hostile. Domestic politics in many Indo-Pacific countries are deeply intertwined with post-colonial nationalism. Foreign military presence, even on a rotational basis, can quickly trigger accusations of compromised sovereignty. Additionally, regional capitals worry that hosting U.S. logistics or prepositioning nodes might involuntarily draw them into a conflict over Taiwan or the South China Sea. Overcoming these concerns requires extraordinary diplomatic nuance and a willingness to accept highly restricted access terms.
Building an Exportable Framework
If policymakers hope to replicate EDCA elsewhere, they should focus on principles rather than specific provisions.
First, sovereignty must be nonnegotiable. Host nations should retain ownership, command authority, inspection rights, and approval authority over activities. The more visible the host-nation role, the more politically sustainable the agreement becomes.
Second, access should be modular. Different partners require different levels of cooperation. Some may support logistics and humanitarian operations but reject military prepositioning. Others may accept rotational deployments while limiting operational activities. The framework should accommodate varying degrees of participation.
Third, agreements should emphasize tangible benefits for local populations. Infrastructure improvements, disaster-response capabilities, employment opportunities, and maritime security enhancements help build domestic support.
Fourth, transparency is essential. Public suspicion grows when military agreements appear secretive or ambiguous. Clear consultation processes and regular communication help reinforce legitimacy.
Finally, military access should remain linked to broader regional stability rather than narrow contingency planning. Agreements that are perceived as purely anti-China initiatives may generate political resistance among states seeking to avoid direct alignment.
Access Networks, Not New Bases
The future of Indo-Pacific security will not be determined solely by the size of military budgets or the number of deployed forces. It will also depend on whether the United States and its partners can create politically sustainable mechanisms for cooperation.
EDCA demonstrates that this is possible. The agreement has strengthened alliance readiness, improved operational flexibility, and increased the costs associated with coercion — all without establishing permanent U.S. bases in the Philippines. Its deterrent effect is meaningful even if not decisive. More importantly, it offers a practical answer to one of the region’s most persistent strategic dilemmas: how to deepen defense cooperation while preserving sovereignty.
As the Indo-Pacific becomes more contested, the demand for that balance will only grow. The most successful security architecture of the next decade may not be built around new bases, new treaties, or new alliances. It may instead emerge from a network of flexible, sovereignty-respecting access agreements modeled on EDCA.
The lesson from the Philippines is clear: The Indo-Pacific does not need more bases. It needs more access.
— —
Hermann Blancaflor is a U.S. Army Reserve Civil Affairs officer and was the Chief of Operations for the 351st Civil Affairs Command in Mountain View, California from 2023–2026. A graduate of the School of Advanced Military Studies and the U.S. Army War College, his service includes a tour in Kunar Province, Afghanistan, as a Civil Affairs team leader with a Provincial Reconstruction Team. He holds a Master of Arts in Military Operations (MAMO) and a Master of Strategic Studies (MSS).
Disclaimer: The views expressed in this article are solely those of the author and do not reflect the official policy or position of the Department of the Army, the Department of Defense, or the United States Government.
