25 June 2026

How the US Strengthened Its Hand in the Strait of Malacca

National Interest  |  John Sitilides, Adinda Khaerani Epstein

US Secretary of Defense Pete Hegseth signed a Major Defense Cooperation Partnership (MDCP) with Indonesian Defense Minister Sjafrie Sjamsoeddin, significantly expanding American influence over the Strait of Malacca. This agreement, following similar arrangements with Thailand, Singapore, and Malaysia, grants the United States a formalized defense framework controlling access to the world's most strategic chokepoint.

The Strait of Malacca is critical for China, through which 80 percent of its oil imports and two-thirds of its total trade by value transit. The MDCP includes exploring co-developing asymmetric capabilities and next-generation defense technologies, alongside a Letter of Intent for US military aircraft access to Indonesian airspace, despite Jakarta's public disavowal. This partnership strengthens Indonesia's military modernization and regional influence, while providing the Trump administration with substantial leverage over China's "Malacca Dilemma," potentially altering Beijing's strategic calculus regarding Taiwan.

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