Navigating geopolitical tensions to secure Southeast Asia’s economic future

However, escalating conflicts, the strategic competition between the United States and China, and rising economic nationalism pose significant threats to these opportunities. Maintaining this favorable environment requires safeguarding the security, supply chains, and established rules that underpin trade and investment.

Governments and businesses must collaborate to de-escalate tensions and understand the political motivations behind economic restrictions. Diversification strategies need careful evaluation to avoid creating new vulnerabilities, and critical infrastructure must be strengthened. A commitment to defending international law, even when it creates friction, is essential.

The disruption of oil and gas supplies to Southeast Asia due to the U.S. conflict with Iran has already impacted the region, driving up energy prices and increasing financial risks. The Strait of Hormuz serves as a reminder of how vital waterways can be leveraged for coercion, prompting Indonesia, Malaysia, and Singapore to reaffirm their commitment to keeping the Straits of Malacca and Singapore open and safe for nearly a quarter of global seaborne trade.

While a potential détente between Washington and Beijing could benefit businesses, any weakening of U.S. commitment to regional security could undermine stability. China’s recent island-building at Antelope Reef, including the construction of a runway, and the opening of a joint military aviation facility in Laos, highlight an expanding presence in the South China Sea and surrounding waters, potentially increasing vulnerability and impacting trade regulations.

While strategic rivalry has occasionally benefited Southeast Asian nations through redirected manufacturing, such as manufacturers shifting production due to U.S. tariffs on Chinese goods, it also creates challenges. U.S. economic nationalism, aimed at reducing trade deficits and bolstering American manufacturing, has resulted in tariffs impacting Southeast Asian nations, including allies like Singapore. Even Vietnam, with a $178.3 billion goods surplus with the U.S. in 2025, has faced increased scrutiny.

Legal challenges haven’t halted these measures, with the U.S. administration resorting to temporary tariffs and investigations into manufacturing capacity and forced labor practices, leading to tariffs on 60 economies, including several in Southeast Asia.

Understanding U.S. objectives, such as reciprocity and reducing strategic dependence, is crucial for determining effective responses. Simply shifting production locations may not satisfy demands for domestic manufacturing.

Reducing reliance on single suppliers is important, but these suppliers may still be vulnerable to shared dependencies, such as reliance on Taiwanese semiconductor foundries. Energy insecurity remains a significant concern, and regional arrangements for secure supplies are still developing. While nuclear power offers a potential solution, reliance on Russian technology could create new dependencies.

Discussions between the Philippines and China regarding joint oil and gas development in the South China Sea highlight the complexities of balancing energy needs with maritime rights. Strengthening critical infrastructure and upholding international law are vital for resilience and deterrence. This requires collaboration on vulnerability assessments, standards, communication, and response planning. Defending these rules is not about choosing sides, but about safeguarding peace and prosperity in the region.