Beer kegs are pictured outside the Stella Artois brewery, part of the Anheuser-Busch InBev group, in Leuven, Belgium, October 27, 2015. The world's top two brewers, Anheuser-Busch InBev and SABMiller, have agreed in principle to one of the biggest mergers in corporate history after a near month-long courtship resulted in SABMiller accepting an offer worth more than $100 billion. REUTERS/Francois Lenoir