https://www.reuters.com/article/us-usa-huawei-tech-canada/key-witness-in-huawei-cfos-arrest-in-u-s-extradition-case-declines-to-testify-in-canada-court-idUSKBN27W0QL >A key witness involved in the arrest of Huawei Chief Financial Officer Meng Wanzhou two years ago has decided not to testify in the Canadian court as part of Meng's ongoing witness cross-examination, the court heard on Monday.