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From diffusion limits to diffusion chaos

The Trump administration's reversal of US AI export restrictions has created strategic uncertainty, benefiting Middle Eastern compute hubs while raising concerns about technology proliferation to adversaries.

Joost de Jonge

Joost de Jonge

3 min read
From diffusion limits to diffusion chaos

This week’s surprise reversal of US AI export restrictions is another U-turn in the global strategy to control the spread of advanced AI. Just days before the so-called “AI diffusion rule” was due to take effect, a Biden-era policy restricting the export of high-end chips and model blueprints to all but 18 trusted allies, the Trump administration scrapped the entire framework.

Existing restrictions on Chinese access to advanced chips have not been relaxed, but diffusion concerns remain. The new Nvidia chips originally destined for the Chinese market continue to face stringent controls, with Commerce Undersecretary Jeffrey Kessler emphasising a strategy of working with “trusted foreign countries” whilst keeping technology “out of the hands of our adversaries.” Others in congress want to go further, with a bipartisan bill “The Chip Security Act” being tabled that would require advanced chip manufacturers to implement technical measures to detect and prevent smuggling to unauthorised countries and end-users.

Nvidia’s share price reacted positively, with part of that bounce coming from a headline-grabbing deal to sell GPUs to Saudi Arabia. Further momentum came from the softer rhetoric toward China on tariffs. But the biggest shift may have come from something less visible, the disappearance of a coherent US AI export strategy. From a US perspective it’s no longer clear what will govern the international flow of AI capabilities. The original diffusion rule had been designed to slow down open-ended proliferation, especially to countries that might re-export technology to adversaries. It aimed to keep advanced training and inference within a tight circle of allies. Now, there’s no clear replacement in sight. China hawks worry unrestricted GPU sales could create backdoor channels to Chinese firms.

As President Trump toured the Middle East, Saudi Arabia and the UAE have emerged as major beneficiaries. Both are planning megaprojects involving tens of millions of Nvidia’s new chips. G42, the Emirati AI firm, will anchor a planned 5GW AI compute hub in Abu Dhabi, leveraging over 2 million of Nvidia’s GB200 chips. The UAE’s close ties to Chinese AI labs have already raised concerns in Washington, but these latest deals seem to ignore such risks in favour of commercial wins for US exporters, celebrated by Trump’s AI czar David Sacks. India too is celebrating. Local cloud firms had feared their AI expansion would stall if US chip supply were constrained. The rollback removes that barrier, at least for now, with a likely focus in future on bilateral deals.

Large US model providers now have freer rein to select overseas training locations, data partnerships, and hardware deployments, although they face ongoing uncertainty about where future lines might be redrawn. This also coincides with domestic deregulation efforts, as House Republicans have inserted provisions into the latest budget bill that would prohibit states and local governments from regulating AI systems for a decade, effectively nullifying existing state-level protections in New York and California. The sweeping measure, which covers everything from facial recognition to algorithmic decision-making in housing and employment, reflects the Trump administration’s broader agenda of removing perceived impediments to AI development at both international and domestic levels.

Investors, meanwhile, are treating the current free-for-all as a bullish signal. But the lesson of the past year is that chip exports, and AI growth forecasts, are now hostage to politics. As we covered several weeks ago Nvidia’s share price was hit after new restrictions came to light. This week, a presidential delegation to the Middle East sent it soaring again. What this means in practice is that we are no longer seeing deliberate shaping of the diffusion frontier.

Takeaways: The Biden AI diffusion rule is effectively dead. A replacement has yet to be proposed, leaving export policy somewhat directionless and unpredictable. We can expect short-term investor optimism but growing long-term risks for firms depending on policy clarity and global compliance. For countries previously consigned to “tier two” US AI access, the gates are now wide open, but for how long?