LONDON : A lack of mutual trust between the West and China and Russia could prevent the development of an international central bank digital currency system, credit rating agency Fitch has warned. Most central banks are now exploring digital currencies in a bid to keep pace with technology, but experts stress that must be able to be used across borders if they are to be successful. The worry is though that deteriorating relations between Washington and Beijing and Moscow, as well as some differing agendas, could make them reluctant to co-operate on the key technological aspects. "We believe that there...