In 1939, shortly before World War II broke out across Europe, several authoritarians arranged a number of alliances in hopes of gaining more power.
The most surprising was Nazi Germany’s Adolf Hitler and Joseph Stalin of the Soviet Union.
Not only did they promise to not take military action against each other for the next 10 years, but they agreed to divide the spoils of war, starting with Poland. Consequently, some knew the German-Soviet Non-Aggression Pact wouldn’t last long, especially since the best weapon authoritarians have at their disposal is always war. This includes the need to have external enemies to exert internal control over people, and to dominate other authoritarians.