Crises

Conflict: This term refers to serious disagreements or arguments, typically protracted ones which can lead to crises if not resolved.

Revolution: A revolution is an instance of revolving or complete change in power or organizational structures that takes place in a relatively short period of time. It's like an escalated crisis leading to drastic changes.

War: War is a state of armed conflict between different countries or different groups within a country. It's like the worst-case scenario following unresolved crises.