Hong Kong (CNN Business) US Secretary of State Mike Pompeo warned European countries on Monday that using technology from Huawei could hurt their relationship with the United States.

Speaking in Hungary, the first stop in a five-nation European tour, Pompeo said the United States has an obligation to alert other governments to the risks of building networks with equipment from the Chinese telecommunications giant.

"What's imperative is that we share with them the things we know about the risks that Huawei's presence in their networks presents," he said. "Actual risks to their own people, to the loss of privacy protections for their own people, the risk that China will use this data in a way that is not in the best interest of Hungary."

If countries use Huawei equipment, "it makes it more difficult for us to partner alongside them," Pompeo said.

It's the latest effort by the US government to pressure countries around the world to keep Huawei out of the next generation of wireless networks, known as 5G, because of security concerns. The US campaign against one of China's leading companies has added to tensions between the two countries over the future of technology.