Tech giants face FTC hearing over proposed merger.

Microsoft CEO Satya Nadella and Activision Blizzard CEO Bobby Kotick are among the witnesses planned for a five-day evidentiary hearing set to begin this week on the Federal Trade Commission's legal bid to block Microsoft's $69 billion acquisition of Activision Blizzard. The FTC argues the transaction would give Microsoft's video game console Xbox exclusive access to Activision games, leaving Nintendo consoles and Sony's PlayStation out in the cold.