Facebook CEO riding high - for now, after WhatsApp deal
February 24, 2014 at 01:00 AM EST
SAN FRANCISCO/BARCELONA, Feb 24 (Reuters) - Facebook Inc Chief Executive Officer Mark Zuckerberg will take a victory lap at the world's largest mobile technology conference in Barcelona on Monday, after beating out Google Inc in a $19 billion acquisition of free messaging service WhatsApp. But he is facing a new arduous race on the horizon.