Court documents: Mark Zuckerberg and other executives repeatedly called messaging apps a threat to Facebook, in the months before acquiring WhatsApp (Wall Street Journal)

Wall Street Journal:
Court documents: Mark Zuckerberg and other executives repeatedly called messaging apps a threat to Facebook, in the months before acquiring WhatsApp  —  Internal emails could serve as fodder for regulators studying social network's business practices  —  In the months before acquiring WhatsApp in 2014 …