Facebook promise to tackle fake news after advertiser's 'swamp' outburst

Facebook executives have pledged to tackle fake news and online fraud after Unilever warned tech firms that it will pull lucrative advertising contracts if companies allow their platforms to "breed division".

Adam Mosseri, the social network's head of news feed, told an audience in California that Unilever's commitment to tackling issues such as online racism, sexism and terrorism is a "great thing".