this is bbc news with the latest headlines for viewers in the uk and around the world. scientists at imperial college in london begin human trials of a revolutionary vaccine against the coronavirus. if it works, the vaccine could be mass produced. it means that we can make the equivalent of 2 million doses in the volume of a litre. so, if you imagine a litre bottle of lemonade, that would have 2 million doses in it. 4,500 jobs are set to go at swissport — a bleak future for baggage handlers and check—in staff throughout the uk. jordan walker—brown was tasered and he'll never walk again. latest figures show one in five of those targeted by police is black. more than 100,000 people have now died from covid—19 in latin america,

over half of those deaths in brazil. and russia finally holds its victory day parade — a display of military might marking 75 years since the defeat of nazi germany in world war ii.