Mark Zuckerberg refused to discuss calls for Facebook to be regulated . The company has been under fire from lawmakers and regulators in the United States since it was revealed that Russian operatives used social media platforms such as Twitter and YouTube to spread divisive messages during last year's presidential Mobile networks have said online firms should have to obey rules like them . They argue social networks are also used for communication purposes . There are mounting concerns internet businesses are being used as a platform for porn and terrorism .
Mark Zuckerberg refused to discuss calls for Facebook to be regulated . Facebook chief insisted he was 'not a regulator ' at a conference in Spain . Mobile networks have said online firms should have to obey rules like them . They argue social networks are also used for communication purposes . There are mounting concerns internet businesses are being used as a platform for porn and terrorism .