President Donald Trump welcomed Crown Prince Mohammed bin Salman, Saudi Arabia's de facto leader, to the White House for the first time since the CIA concluded that the crown prince approved the 2018 killing of Washington Post journalist Jamal Khashoggi. In a tense Oval Office exchange with reporters, the president defended bin Salman saying the prince "knew nothing" about the murder. NBC’s Peter Alexander reports for TODAY. » Subscribe to TODAY: youtube.com/@TODAY TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow F...