U.S. prosecutors filed criminal charges against Huawei Technologies Co., China’s largest technology company, alleging it stole trade secrets from an American rival and committed bank fraud by violating sanctions against doing business with Iran.
Huawei has been the target of a broad U.S. crackdown, including allegations it sold telecommunications equipment that could be used by China’s Communist Party for spying. The charges filed Monday also mark an escalation of tensions between the world’s two largest economies, which are mired in a trade war that has roiled markets.
In a 13-count indictment in Brooklyn, New York, the government alleged Huawei, two

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