National Viacom CEO Files Lawsuit In Corporate War With Sumner Redstone 4:28pm May 23, 2016 by David Folkenflik Business U.S. Media Share URL copied to clipboard! Copyright 2016 NPR. To see more, visit NPR. 300x250 Ad More All Things Considered National Trump's massive spending bill & the GOP's priorities by Scott Detrow Arts Indian writer Banu Mushtaq wins International Booker Prize by Scott Detrow 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate