The Trump Administration last week ordered companies to stop selling U.S. technology to Huawei, calling the company a potential security threat that could use its telecom equipment to spy on other countries. That prompted Google and other U.S. firms to begin suspending dealings with Huawei, and is now creating knock-on effects for even non-U. S. companies.

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Huawei has vigorously denied the spying claims, and the Trump administration allegation that the Chinese government exerts unhealthy influence on Huawei. With about $105 billion in global sales last year, Huawei is the world’s second largest seller of cellphones, and the largest seller of equipment used to build 5G, or 5th generation, wireless networks.

“We value our close relations with our partners, but recognize the pressure some of them are under, as a result of politically motivated decisions,” Huawei said in a statement Wednesday. “We are confident this regrettable situation can be resolved and our priority remains to continue to deliver world-class technology and products to our customers around the world.”

The conflict is putting companies and governments around the world in a tough spot, forcing them to choose between alienating the United States or China.

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Arm Holdings issued its statement after the BBC reported the firm had told staff to suspend dealings with Huawei.

An Arm spokesman said some of the company’s intellectual property is designed in the United States and is therefore “subject to U.S. export controls.”

Losing Arm as a supplier would be a major blow, as it would “cripple key Huawei chips,” said Dave Burstein, a telecom analyst at STL Partners and publisher of Huawei Report. Burstein discloses two conflicts of interest on his site, saying Huawei has paid his expenses to attend conferences and provided contracting work to STL Partners.

BT Group’s EE division, which is preparing to launch 5G service in six British cities later this month, said Wednesday it would no longer offer a new Huawei smartphone as part of that service. Vodafone also said it would drop a Huawei smartphone from its lineup. Both companies appeared to tie that decision to Google ‘s move to withhold licenses for its Android operating software from future Huawei phones.

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Europe is far from abandoning Huawei, however. Despite relentless pressure from the Trump administration, European governments have declined to issue outright bans on Huawei equipment as they erect the cellphone towers and other parts needed for 5G networks.

In both Britain and Germany — traditionally two of Washington’s closest European allies — officials have said they are setting high security standards and are well aware of the potential pitfalls of using the Chinese company to supply vital digital infrastructure.

“The companies that supply 5G will have huge power in their hands. And we know that Huawei is a de facto state company of China,” said Jürgen Hardt, foreign policy spokesman for Germany’s governing Christian Democratic Union. “I don’t think anyone is unaware of the risks. This isn’t like buying and selling chewing gum.”

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Hardt said Germany knows how to manage the risk, and he noted pointedly that Germany’s decision-making “will be independent of what Mr. Trump does.”

He also suggested that the U.S. pressure has been counterproductive. It could feed a narrative among German voters, he said, that their government is “just giving in to pressure from the United States” if Huawei is ultimately left out of the country’s networks.

That is considered unlikely. Telecommunications suppliers have said that without a major, low-cost supplier like Huawei, the process of rolling out 5G — a badly needed resource in a country where 4G coverage is still spotty — could be far more costly, and may be delayed by years.

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Key decisions are likely to be made this summer as Germany picks winners following an auction of 5G spectrum.

German Chancellor Angela Merkel reiterated last week that Huawei technology would not be excluded from the competition. Her government had already concluded that such a ban would be illegal.

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Other European leaders have taken the same approach, resisting Washington’s demands for a ban while emphasizing that they are on top of the security threat.

France’s position, president Emmanuel Macron told a technology conference last week, “is not to block Huawei or any other company. France and Europe are pragmatic and realistic.”

Britain, which has used Huawei equipment in its telecom networks for more than a decade, also insists that it has the situation under control. The U.K. bars Huawei parts from the sensitive “core” of its current 4G networks, which contain routers and switches handling massive volumes of traffic. Vodafone and other carriers use Huawei equipment on the edge of the network, where radio antennas connect with user devices.

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British officials have said they’re considering a similar approach with 5G.

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In a statement in response to questions, the National Cyber Security Center said that “Huawei’s presence in the UK is subject to detailed, formal oversight. This provides us with a unique understanding of the company’s software engineering and cyber security processes.”

The issue has proven divisive in Britain. Earlier this month, it indirectly triggered the resignation of the defense secretary, Gavin Williamson, amid fighting within Prime Minister Theresa May’s government over how tough to be on Huawei.

The U.K. is trying hard not to alienate the United States or China, at a time when it needs both superpowers and their trade and investment to buffer the likely impacts of Britain’s planned departure from the European Union, said Leslie Vinjamuri, head of Chatham House’s Americas program.