KEY POINTS
  • The ailing 94-year-old is currently caught in the middle of merger talks between his two companies, with CBS close to making an all-stock offer for Viacom.
  • Uncertainty remains over whether the senior Redstone is fit to participate in discussions, especially given his inability to speak beyond one-word sentences and grunts.
Sumner Redstone

Media mogul Sumner Redstone, who maintains voting control over CBS and Viacom, has resorted to communicating through an iPad preloaded with audio clips of his voice saying "yes," "no" and "f--- you."

The ailing 94-year-old is currently caught in the middle of merger talks between the two companies, with CBS close to making an all-stock offer for Viacom.