https://techcrunch.com/2018/10/31/mark-zuckerberg-gets-joint-summons-from-uk-and-canadian-parliaments/

Two separate parliamentary committees, in the UK and Canada, have issued an unprecedented international joint summons for Facebook’s CEO Mark Zuckerberg to appear before them.

The committees are investigating the impact of online disinformation on democratic processes and want Zuckerberg to answer questions related to the Cambridge Analytica-Facebook user data misuse scandal, which both have been probing this year.