Why Palpatine Never Feared Darth Vader: The Sith Lord’s Secret Strategy
via screenrant.com
Short excerpt below. Read at the original source.
Second only to the Jedi, a Sith Lord’s greatest threat is their own apprentice – but I’ve figured out why Palpatine never feared Darth Vader. It’s easy to forget that the Sith are naturally self-destructive; the dark side is competitive, so Sith tend to be their own worst enemies.