As concerns about foreign state influence over critical telecommunications equipment grow, Poland and the USA have signed a declaration calling for stringent checks.

"Protecting these next-generation communications networks from disruption or manipulation and ensuring the privacy and individual liberties of the citizens of the United States, Poland, and other countries is of vital importance," the agreement states.

While concerns about foreign state influence over national telecoms networks have been raised in the past, the debate has grown amid the rollout of 5G due to this generation's expected use for more critical applications including smart cities, connected cars, and healthcare.

The US has led the concerns for quite some time, but the pressure on its allies to follow has increased amid growing trade tensions with China of which Chinese telecoms giant Huawei, in particular, has found itself in the crossfire.

Some observers believe the US' calls are more political than based in reality, especially given the lack of proven evidence that Huawei itself has ever been involved with any form of espionage.

Even the UN said that US fears over Huawei's equipment are politically-motivated.

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