President Joe Biden told his counterpart Ferdinand Marcos Jr. on Monday that the US commitment to the defense of its ally was “ironclad,” including in the South China Sea where Manila is under pressure from China.
Marcos, on the first White House visit by a Philippines leader in 10 years, stressed the importance of the US as his country’s sole treaty ally in a region with “arguably the most complicated geopolitical situation in the world right now.”

The two countries reaffirmed their decades-old security alliance in a trip that marks a dramatic turnaround in US-Philippine relations as both countries seek ways to push back against what they see as China’s increasingly aggressive actions near Taiwan and in the South China Sea.

US officials said the leaders would agree on new guidelines for stronger military cooperation, as well as stepped-up economic cooperation.

“The United States remains ironclad in our commitment to the defense of the Philippines, including the South China Sea,” Biden told Marcos in the Oval Office.

A joint statement said this meant that any armed attack on Philippine armed forces, public vessels or aircraft in the Pacific, including in the South China Sea, would invoke US mutual defense commitments under a 1951 Mutual Defense Treaty.

Washington sees the Philippines as key to any effort to counter an invasion of Taiwan by China, which claims the self-ruled island as its own territory. Manila recently agreed to allow the US access to four more of its military bases under an Enhanced Defense Cooperation Agreement, but the two sides have not said what US assets will be stationed at those.

The joint statement said the leaders “affirm the importance of maintaining peace and stability across the Taiwan Strait as an indispensable element of global security and prosperity.”

Under Rodrigo Duterte, Marcos’ predecessor, US relations soured as he turned the Philippines sharply away from its former colonial ruler and built closer ties with China.

Biden has invested in courting Marcos, who still faces a US court judgment connected with $2 billion of plundered wealth under his father’s rule.

US officials said the new guidelines focused on military coordination across land, sea, air, space and cyberspace, while the US administration would also transfer three C-130 aircraft and look to send additional patrol vessels to the Philippines.

“It is only natural for the Philippines to look to its sole treaty partner in the world to strengthen and to redefine the relationship that we have and the roles that we play in the face of those rising tensions that we see now around the South China, Asia Pacific and Indo-Pacific region,” Marcos said.

The summit is the centerpiece of a four-day US visit by Marcos that started on Sunday.

Marcos has sought warm relations with both the US and China, who are vying for influence in the Indo-Pacific. The Biden-Marcos joint statement did not name the Chinese government.

Experts say Washington considers the Philippines a potential location for rockets, missiles and artillery systems to counter a Chinese amphibious assault on Taiwan.

However, Marcos told reporters on his plane China had agreed to discuss fishing rights in the South China Sea and also that he would not allow the Philippines to become a “staging post” for military action.

The joint statement said Biden would send a Presidential Trade and Investment Mission to the Philippines to enhance investment in clean energy transition, the critical minerals sector, and food security.

The two countries would also co-host in Manila the 2024 Indo-Pacific Business Forum – the marquee US commercial event in the region — which would further establish the Philippines as a key hub for regional supply chains.

The statement also said the countries looked forward to establishing trilateral cooperation with Japan and Australia.

With many Filipinos frustrated by China’s actions in the South China Sea, including the harassing of Philippine ships and fishermen in parts that both countries claim, popular support has grown in the Philippines for a tougher stance toward Beijing.

Biden was the first official to reach out to Marcos after his election and has made strengthening economic and military ties in the Indo-Pacific region a cornerstone of his foreign policy.

Before the summit, US lawmakers sent a bipartisan letter to Biden calling on him to raise what they called the worsening human rights “crisis” in the Philippines.

They said there were well-documented violations under Duterte but recent reports showed “ongoing impunity.” They cited reports from the Karapatan Human Rights Alliance of 17 extrajudicial killings, 165 illegal arrests from July to December 2022, and a total of 825 political prisoners. A White House summary said human rights were among the topics being discussed by the two countries.
Marina Bay Sands is preparing to host around 29,000 technology executives at a late-September summit focused on cloud infrastructure, cybersecurity, data centers and enterprise artificial intelligence investment.
Thailand’s Eastern Economic Corridor Office has held investment forums with Chinese technology and manufacturing companies from the Yangtze River Delta to attract digital infrastructure and industrial capital into eastern Thailand.
Cambodian Defense Minister Tea Seiha led a military delegation to HMAS Kuttabul in Sydney, reflecting Phnom Penh’s effort to broaden defense relationships beyond its existing ties with China.
NXP Semiconductors is expanding automotive and radar chip design capabilities across Southeast Asia while using European Chips Act support to connect regional engineering talent with European vehicle manufacturers.
Thailand’s ambassador to Cambodia has denied reports that Thai diplomats pressured other countries to limit discussion of the bilateral border dispute at the upcoming Francophonie Summit.
Dutch payments company Adyen reported strong transaction-volume growth among Asia-Pacific enterprise clients as it uses its Singapore headquarters to expand across the region’s increasingly digital payments market.
Bursa Malaysia recorded more than 342,000 new central depository accounts in the first half of the year, driven largely by younger investors and prompting stronger regulatory efforts on financial literacy and fraud prevention.
The Singapore dollar gained against the US currency following a decline in long-term Treasury yields and an expansion of Washington’s bond buyback program.
Benchmark palm oil futures have risen toward 5,000 ringgit per tonne as traders assess the risk of supply disruption from agricultural and peatland fires across Indonesia.
Thai corporate executives and the Bank of Thailand have urged the government to establish a 100 billion baht university innovation fund alongside a five-layer sovereign artificial intelligence strategy.
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Myanmar military leader Min Aung Hlaing is set to visit Phnom Penh for bilateral talks, continuing direct engagement with mainland Southeast Asian governments despite his exclusion from official ASEAN summits.
Philippine Defense Secretary Gilberto Teodoro has warned that Beijing could use reductions in US-South Korean military exercises to expand its strategic presence in the disputed South China Sea.
Thailand’s Interior Ministry has reduced visa-free stays from 60 days to 30 days for passport holders from 93 countries, adjusting the policy as the government balances tourism growth with immigration and security concerns.
Cambodia has approved a $1.22 billion fiscal stabilization program to offset higher fuel costs and global trade volatility after international tourist arrivals fell 46% from a year earlier.
A 25-hour eruption of Anak Krakatau prompted Indonesian aviation authorities to ground flights at Soekarno-Hatta International Airport, stranding an estimated 150,000 passengers and disrupting logistics around the capital.
Monetary Authority of Singapore forecasters have lifted the city-state’s growth estimate to 5%, citing strong capital inflows and rising global spending on artificial intelligence hardware and infrastructure.
Vietnam’s economy grew 8.4% in the second quarter, outperforming expectations as foreign investment, manufacturing and export demand continued to support the country’s rise as an alternative production base to China.
Thailand’s Board of Investment has attracted $30.5 billion in semiconductor packaging, printed circuit boards and artificial intelligence hardware projects since 2023, strengthening the country’s position in Southeast Asia’s advanced manufacturing supply chain.
Large peatland and forest fires in Borneo and Sumatra are worsening air quality across Indonesia, Singapore, Malaysia and the Philippines, forcing school closures and increasing public-health and diplomatic pressures across the region.
Representatives of Singapore and Hong Kong have played down direct rivalry between the two financial centres and called for greater cooperation even as both introduce incentives to attract ultra-high-net-worth family offices.
The US aircraft carrier USS Abraham Lincoln has departed Pattaya after a logistical and diplomatic visit that highlighted defence cooperation between Washington and Bangkok.
Indonesia has begun developing plans for a nationwide battery-recycling system to manage future industrial waste and support more sustainable supply chains in its growing electric-vehicle and critical-minerals industries.
Malaysia is introducing education initiatives and corporate incentives to retain semiconductor specialists as increased foreign investment intensifies demand for engineers in the country’s chip industry.
Singapore authorities have searched the offices of commodities trader Radiant World over allegations involving invalid invoices and false documentation, alongside related investigations by US authorities.
Southeast Asian digital policymakers are considering a regional regulatory framework requiring global technology companies to strengthen protections against digital fraud, harassment and child exploitation.
Vietnamese policymakers are urging domestic manufacturers to adopt artificial intelligence and advanced data systems after exports reached $374 billion in the first eight months of the year.
The Monetary Authority of Singapore has launched a three-year financial technology programme worth $220 million to promote adoption of artificial intelligence, distributed-ledger technology and quantum computing across the financial sector.
China has begun deploying command vessels for the planned opening of the Pinglu Canal, a $10 billion waterway intended to give inland factories a more direct shipping route to markets including Vietnam and Thailand.
PLDT, Globe Telecom and Converge ICT have allocated a combined $2.2 billion for network investment, including underground conduits, the National Fiber Backbone and infrastructure supporting artificial intelligence.
Thai Airways has temporarily halted passenger and cargo services to Jakarta because of hazardous volcanic activity in Indonesia, disrupting a major regional aviation route.
Chinese automaker BYD has opened its first Southeast Asian production facility in West Java, with annual capacity of 150,000 vehicles as Indonesia expands its role in the regional automotive supply chain.
Authorities in Sarawak have closed schools and activated emergency measures after smoke from Indonesian agricultural fires pushed air pollution to hazardous levels and renewed regional tensions over transboundary haze.
Prime Ministers Lawrence Wong and Anutin Charnvirakul concluded their first leaders’ retreat in Bangkok with commitments to deepen cooperation in digital economies, civil-service exchanges and regional supply chains.
China and ASEAN trade officials concluded another round of negotiations focused on reducing non-tariff barriers, expanding digital-economy integration and strengthening critical supply chains.
Thailand has temporarily halted approvals and construction for 166 data centre projects while the government develops rules covering clean-energy use, cybersecurity and economic benefits for the domestic technology sector.
Investment applications in Thailand rose 37% in the first half of the year as capital flowed into digital infrastructure, data centres and advanced manufacturing.
Japan is negotiating transfers of decommissioned naval vessels to the Philippines and Indonesia in an effort to strengthen regional maritime capabilities without requiring explicit alignment against China.
Vietnam has formally objected to Chinese infrastructure development in the disputed Paracel Islands, adding to South China Sea tensions ahead of an upcoming ASEAN summit.
Beijing has indicated it could build permanent facilities at Scarborough Shoal if Manila continues challenging Chinese maritime enforcement, prompting security discussions among the Philippines, the United States and Japan.
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The Philippine government plans significant increases in teacher compensation, annual allowances and professional development funding under the proposed 2027 budget as it seeks to strengthen retention in the public education system.
Veteran political activist Sondhi Limthongkul has indicated that he may organize new demonstrations, raising the prospect of renewed street mobilization amid continuing political realignment in Thailand.
Singapore’s Ministry of Home Affairs is investigating racist online commentary surrounding Singapore Airlines’ integration with Air India, reiterating the government’s stance against xenophobia in the multiracial city-state.
Vietnam is developing Phu Quoc as a higher-end international tourism hub, with Sun PhuQuoc Airways taking delivery of Airbus A321LR aircraft to expand the island’s international connectivity.
Technology companies and financial institutions in Singapore are sharply increasing compensation for artificial intelligence developers, reinforcing the city-state’s position as a leading regional market for advanced technology talent.
The Philippine Department of Public Works and Highways has begun technical work on a national flood-management master plan using advanced modeling to protect major urban centers and critical infrastructure.
Vietnamese financial authorities urged ASEAN governments to accelerate development of a more unified fintech ecosystem, with closer digital banking and cross-border financial integration across Southeast Asia.
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