this is bbc news: i'm annita mcveigh with the latest headlines for viewers in the uk and around the world. running out of time — novak djokovic arrives to hear his lawyers�* final appeal against the cancellation of his australian visa. police in texas are negotiating with a man who appears to have taken hostages at a synagogue. the first case of the omicron variant confirmed in beijing, just three weeks before the start of the winter olympics. a huge underwater volcanic eruption near tonga triggers tsunami warnings across the pacific ocean.