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Pax Silica has signed two of ASEAN's eleven members, both of them US security allies well before December 2025, so the only thing that would move the region's arithmetic is a letter Washington has drafted and not yet sent.
The Investor · Invest desk

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Commerce's June emergency order handed every non-signatory in the region a demonstration it could not have bought for itself: Anthropic was told to restrict Mythos 5 and Fable 5 to US nationals only, and the order was later lifted, so the capability was proved and withdrawn rather than disproved [10]. Access sold as a service can be geo-fenced by one signature in Washington; weights already sitting on a Malaysian server cannot be recalled, which is the durable half of what WAICO is offering emerging economies, whatever happens to the pricing advantage Fortune credits to Chinese developers [2][11].
The tally as it stands earns a subtraction. About 18% of the bloc has signed [1], and because both signatories sat inside the US security perimeter before the programme existed in December 2025, Pax Silica has actually moved zero ASEAN states [6][1][3]. Nine have signed nothing, and where they went instead is not in this record: WAICO opened with 29 founding members and no roster, so anyone telling you ASEAN has quietly filled out Beijing's column is going past the evidence [2][5].
Malaysia is the expensive one to buy, and it knows the number. It handles 13% of global outsourced semiconductor assembly, testing and packaging, and electrical and electronics is 44.3% of its exports, which is the arithmetic underneath a neutrality policy its former trade and industry minister defined as securing chips from both NVIDIA and Huawei [9][8]. Lose a tenth of E&E sales and you have lost 4.43% of everything the country ships abroad [7], and a government facing that does not experiment with its customer list to please either capital.
The instruments actually binding those nine today number zero: one emergency order, issued and lifted, and one letter that exists as an internal draft the State Department declined to discuss with Reuters [4][10][4]. Eight months separate the no-purity-test position from the draft's exclusivity language, and the programme itself did not change in between [3][4][6]. Optionality is what has repriced here, and it gets confused with obligation because only optionality ever gets written down.
The letter could stay in the drawer, in which case Malaysian neutrality was correctly priced at zero; it could ship and work as leverage inside bilateral chip licensing rather than as a membership rule; or, the more interesting version, it could ship and draw no reply, because a letter is not a licence condition and a government absorbs a rebuke more cheaply than it absorbs losing Huawei [8]. My read is that exclusivity arrives at the firm level before the state level, since Commerce has already shown it can reach one vendor's customer geography [10]. Two things would break that read: Malaysia acceding to Pax Silica while still buying Huawei, which would mark the exclusivity language as rhetoric, or a Singapore operator being told which hardware it may host, which would turn the city's agenda-setting position on data centres into an enforcement surface for someone else's export policy [14][8].
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The U.S. launched Pax Silica in December 2025, purportedly to secure global supply chains for semiconductors and semiconductor manufacturing equipment, AI technologies and rare earth minerals; Washington positions it as a cooperative organization rather than a way to enforce its own policies.
The China-led World Artificial Intelligence Cooperation Organization (WAICO) launched in Shanghai in July 2026 with 29 founding members, positioning itself as a champion of emerging economies and of accessible AI, drawing on the surge in open-weight models from Chinese developers.
The architect of Pax Silica, Under Secretary of State Jacob Helberg, suggested at a Hudson Institute event in January that he was not interested in a "purity test": "If you held everyone to that standard, you would quickly run out of friends."
According to an internal draft viewed by Reuters, Washington is preparing a letter to Pax Silica partners making clear that "to be part of everything is to be part of nothing"; the State Department declined to comment on the letter to Reuters.
Washington originally said it would not stop Pax Silica members from working with China.
So far just two of ASEAN's eleven members, Singapore and the Philippines, both longtime U.S. security allies, have signed on to the Pax Silica regime.
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Single analysis relaying a document it never saw
The most consequential item here is the one Fortune did not read: Reuters viewed the internal draft, Fortune quotes a single line from it, and the State Department would not discuss it. The checkable material is sturdier, including the two-of-eleven signature count, Malaysia's 13% share of outsourced assembly and testing and the 44.3% export share, but every figure reaches us through the same piece, with no second outlet or primary text in our coverage to test it against.
Two signatures, both pre-committed allies
Nine months after launch, Pax Silica holds Singapore and the Philippines, states already tied to Washington by security relationships that predate December 2025, so the count of ASEAN governments it has actually moved is zero. The region's real activity is running elsewhere: the 360 MW Batam campus will put 170,000 Nvidia accelerators on Indonesian land and power from Q1 2027 without Indonesia joining anything, and Malaysia keeps buying from NVIDIA and Huawei both.
Rival-orders framing runs ahead of the paperwork
Fortune opens on two competing world orders, and what it can document is a nine-month-old arrangement with two allied signatures, an export control order that was rescinded, and a letter still sitting in draft. The philosophy the piece identifies is real enough as an attitude among some US officials; the enforcement machinery it implies has not touched any of the nine unsigned ASEAN states yet. To the analysis's credit, it says so plainly in the same breath.
Advocacy piece, and self-interested framings quoted at face value
Fortune is not neutral here and does not pretend to be: it tells ASEAN states they would be wise to resist America's call to allegiance, then marshals the June Anthropic order and Chinese cost advantages behind that recommendation. On the other side, two positioning claims pass through unchallenged, Washington's description of Pax Silica as cooperative rather than coercive, and Helberg's defence of the arrangement he himself designed. Malaysia's neutrality doctrine reaches us via a former minister, whose incentive to describe past policy favourably goes unexamined.
Firm on the arithmetic, thin on the letter
How many ASEAN states have signed, who they are, and what Malaysia has at stake are stable facts that would survive a second look. The premise in the headline rests on one relayed draft with no recipients, timetable or stated consequence, and the region's other pole is a membership count with no members named. That mix supports the conclusion that ASEAN's hedge is intact today, and supports very little about what Washington does next.
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1 article · September 5, 2026