http://www.washingtonpost.com/blogs/the-switch/wp/2018/04/17/atts-ceo-is-about-to-defend-the-biggest-merger-of-his-career/ >AT&T chief executive Randall Stephenson is expected to testify in federal court this week to defend his company's historic merger with Time Warner, a deal that antitrust regulators have said is illegal and anticompetitive. >For the 57-year-old Oklahoma native, the testimony marks a pivotal moment in his roughly decade-long stewardship of the telecom giant — and the climax of a longtime acquisition strategy.