US President Donald Trump’s decision last month to blacklist Huawei, one of China’s most strategically important companies, has roiled global markets already trying to digest the impact of higher tariffs in a year-long trade war that risks upending global supply chains. “Some if not all regional countries may harbour concerns about the security ramifications of using Huawei, but there are real pragmatic considerations,” said Collin Koh, a research fellow at RSIS.