Colby in Southeast Asia: Partners, Not Vassals, and Quiet Deterrence

Elbridge Colby, the Pentagon's top policy official, on August 13 pushed a sweeping U.S. defense agenda for Southeast Asia while rejecting reports that Washington is expanding its reliance on short-range nuclear weapons.

Midway through a four-nation swing through the Philippines, Indonesia, Thailand, and Cambodia, Colby addressed journalists via the State Department's Asia Pacific Media Hub at 11 a.m. Bangkok time. He cast the Trump administration's approach as a turn toward "peace through strength" — a doctrine he traced to Eisenhower, Nixon, and Reagan, and contrasted sharply with the ideologically driven posture of recent administrations. The United States, he stressed, is no longer offering open-ended commitments that can be taken for granted; it seeks practical partners capable of defending their own sovereignty.

The Philippines drew the warmest praise. Colby called it a "model ally" after meeting President Ferdinand Marcos Jr. and Defense Secretary Gilberto Teodoro, and cited 18 months of accelerated progress at the Enhanced Defense Cooperation Agreement (EDCA) sites — forward access locations where U.S. forces preposition equipment across the archipelago.

"We just see further progress is definitely in the future," he said, adding that Manila had been "very productive and collaborative" in a manner consistent with Philippine sovereignty.

On the South China Sea, where Chinese coast guard and maritime militia vessels have repeatedly harassed Filipino resupply missions, Colby steered away from rhetorical escalation. The administration, he said, was "not interested in unnecessarily pressurizing the rhetorical environment" and was instead focused on building hard military capability.

Indonesia Partnership Advances On Sovereignty Terms After Prabowo Summit

In Jakarta, Colby met President Prabowo Subianto and the Indonesian defense minister, describing the sessions as opening "new vistas" in the relationship. Talks centered on the Maritime Defense Cooperation Partnership (MDCP) framework, which he said would be built in a way that respects Indonesian sovereignty while helping the country develop its own defense capacity.

An Indonesian journalist raised a blanket overflight agreement signed earlier this year that sparked domestic protests, with critics warning it could compromise sovereignty. Colby rejected the premise. "We are not the threat to that territorial integrity," he said. "We're not looking to expand our territory."

He extended the same message to Malaysia, welcoming deeper cooperation on the Strait of Malacca despite its absence from the current itinerary. Across the region, Colby framed the U.S. approach as one of mutual interest rather than hierarchy: "We're not asking for fealty; we're asking for practical things."

The briefing's sharpest factual correction came when Colby pushed back against reports that the Pentagon is building a nuclear strategy centered on short-range, low-yield weapons to deter China and Russia.

"We are not seeking to accentuate or increase the focus on theater-range nuclear weapons," he said. "There is a little bit of, I think, an error in the reporting." He described the review as narrow — not a full nuclear posture review — and said the more meaningful consideration was crossing the nuclear threshold itself and the effects of any strike, not the range or location of a weapon. The goal, he stressed, was to keep nuclear strategy rational and proportionate — designed to maintain deterrence, not erode it. The U.S. military, he added, is being shaped for a defensive function of denial, not regime-change operations.

On AUKUS — the agreement to supply Australia with nuclear-powered submarines — Colby quoted President Trump directly: "full steam ahead."

He said submarine production remained the critical variable, both for U.S. Navy requirements and for eventually delivering Virginia-class boats to Australia in the 2030s. The Submarine Rotational Force-West (SRF-West), a Western Australian facility hosting rotating U.S. submarines, drew particular praise. "Australia really sees things through the lens of collective defense and a strategy of deterrence by denial designed to sustain a balance of power in this key region," Colby said.

Asked directly about Taiwan's annual military drills, which wrapped up this week, Colby declined to name the island — referring only to "the status quo" and "that sensitive issue" — while echoing President Trump and Secretary of State Marco Rubio in calling for a stable rhetorical environment. The previous administration, he said, applied "intense rhetorical pressure" on the issue "without a commensurate focus on delivering military capability in the region."

This approach, Colby argued, is consistent with a longer American realist tradition. It pairs quiet, relentless strengthening of conventional and nuclear deterrence along the first island chain — the critical geography running from Japan through Taiwan and the Philippines — with deliberate restraint in public messaging. The aim is strategic stability: enough capability to deter aggression, without language that unnecessarily raises the temperature.

Colby dismissed suggestions that the Pentagon's decision to rename U.S. Indo-Pacific Command back to U.S. Pacific Command (PACOM) signaled reduced interest in India or the Indian Ocean. Strategic planning, he said, remained concentrated on the first island chain and the Western Pacific — the areas most directly implicated in contingencies involving China.

"If anything, we really see India as a vital relationship," he said. The change reflected geographical terminology differences — not a strategic shift — and he pointed to his own New Delhi visit in March as evidence of continued high-level engagement.

（Related： Han Kuang 42 | Army Apaches Land at Coast Guard HQ in Dispersal Drill ｜ Latest ）