Months before Electronic Arts Inc. and Saudi Arabia’s sovereign wealth fund agreed to a record-breaking buyout deal, President Donald Trump’s son-in-law made a pivotal introduction. Jared Kushner brokered the initial connection between the Redwood, California-based video game maker and Saudi Arabia’s Public Investment Fund, and for months acted as a central figure in the talks, according to people familiar with the matter, who requested anonymity to discuss private conversations. When the deal’s momentum ...