Rebecca Messina joined Beam Suntory two-and-a-half years ago to lead global marketing after spending the previous two decades with The Coca-Cola Co. This week, Messina took time out from Beam Suntory's annual global conference in Barcelona to sit down with just-drinks and talk about what lessons she has brought from Coca-Cola to her current role, the challenges of marketing around stock shortages and why there would be no winners from a Trump trade war.