https://www.theguardian.com/technology/2017/nov/16/facebook-must-share-information-on-russian-interference-in-uk >Social network is urged to reveal what it knows as expert says it is unlikely Russian professional trolls only used Twitter >Facebook is under pressure from academics and parliamentarians to reveal what it knows about Russian attempts to manipulate British politics, as research efforts flounder against the company’s locked-down social network.