London (CNN Business) 1. Huawei charged: The United States has filed criminal charges against Huawei, escalating its fight against the Chinese tech giant and potentially complicating trade talks between Washington and Beijing.

T-Mobile TMUS The Justice Department unsealed two cases against Huawei. One indictment accuses Huawei of trying to steal trade secrets from, and of promising bonuses to employees who collected confidential information on competitors. The second claims the company worked to skirt US sanctions on Iran.

Prosecutors also revealed formal charges against Meng Wanzhou, Huawei's chief financial officer. Meng was arrested in Canada in December, and the United States is looking to extradite her.

China lashed out in response, accusing the United States of trying to "kill" Chinese businesses.

"The United States has deployed its state power to smear and crack down on targeted Chinese companies in an attempt to kill their normal and legal business operations," said Foreign Ministry spokesman Geng Shuang.