Interested in becoming a tyrant? There are rules, and the playbook for a rise to dictatorship starts with one of history's most brutal: Adolf Hitler.

When keeping your population under control, is it better to be loved or feared? Idi Amin certainly thought he knew the right answer to that question.

Seizing power is hard, but keeping it is harder. In North Korea, the Kim dynasty unlocked the secret to ruling forever: They declared themselves gods.