FortuneHow Viacom Could Have Avoided Its 'Game of Thrones' Leadership SagaFortuneSumner Redstone's iron grip on power is nothing new. Facebook, Alibaba, Amazon, take note. While Viacom's raging succession battle surrounding owner Sumner Redstone is as compelling as the company's TV dramas, the script is not new. Akin to ...The epic clash over Sumner Redstone's media empireCBS NewsViacom Director Presses for Access to Sumner RedstoneWall Street JournalViacom Directors Add Redstone's Great-Grandchildren to SuitNew York TimesReuters -Deadline -Hollywood Reporter -Fox Businessall 21 news articles »