Labour can stop Brexit – but only with fresh vote, says Sadiq Khan

London mayor raises hopes of remainers, arguing pledge in manifesto or second referendum would both be legitimateSadiq Khan: ‘I’m not sure what Donald Trump’s beef is with me’Sadiq Khan has set out the possibility of Britain remaining within the EU, arguing that Brexit could be legitimately stopped if the Labour party included the pledge in an election manifesto or committed to a second referendum.In a considered and powerful intervention that could raise the hopes of rem