The following responses are examples of a nation-state conflict:
- Slovenia turning into a nation-state
- Czechoslovakia transforming into two nation-states
- the Soviet Union breaking up into different republics
- Russians in Ukraine rebelling in the eastern region of the country
The response regarding the United Kingdom and France declaring war with Germany is more of a conflict between states rather than a nation-state conflict, which typically involves the formation or reorganization of nation-states along ethnic or national lines.