Nigel Farage allegedly held several secret meetings with Julian Assange and gave him a USB stick with data on it, a US congressional enquiry has heard. / Former UKIP leader Nigel Farage is alleged to have made several undisclosed trips to the Ecuadorian embassy in London to visit WikiLeaks founder Julian Assange.

Carole Cadwalladr digs into one of the most perplexing events in recent times: the UK's super-close 2016 vote to leave the European Union. Tracking the result to a barrage of misleading Facebook ads targeted at vulnerable Brexit swing voters -- and linking the same players and tactics to the 2016 US presidential election -- Cadwalladr calls out the "gods of Silicon Valley" ...