https://www.cnbc.com/2018/06/18/how-apples-tim-cook-became-techs-top-diplomat.html > Apple's chief executive, Timothy D. Cook, may be the leader of the world's most valuable public company, but lately he has had to act a lot like the tech industry's top diplomat. > Last month he visited the Oval Office to warn President Trump that tough talk on China could threaten Apple's position in the country. In March, at a major summit meeting in Beijing, he called for "calmer heads" to prevail between the world's two most powerful countries.