Secretary of State Mike Pompeo  has detailed a new five-pronged “Clean Network” effort aimed at curbing potential national security risks, expanding the “5G Clean Path” program.

The U.S. wants to see “untrusted Chinese apps” removed from Apple’s (AAPL) and Google’s (  GOOGL) app stores, called for companies to limit availability of their apps on phones made by Huawei and urged firms to halt using Chinese cloud providers like Alibaba (BABA), Baidu (BIDU)  and Tencent  (OTCPK:TCEHY) for storing sensitive data.

While the guidance isn’t binding, it signals an escalation of President Trump administrations efforts to limit the spread of Chinese technology after declaring a potential ban on TikTok earlier this week.