system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did Switzerland stay out of WWII?

Austrian is already literally penetrating them, and they are in between the axis and France.  How did they resist being invaded and stay neutral?
gpt
First realize Switzerland had no specific resources needed by anyone. They are resource poor.

They also have a history of having a strong self defense ability. Every man was a trained soldier with a rifle stored in his home. Those mountains are honeycombed with tunnels and defensive firing positions. They had no great strategic value and were literally to tough to be worth a symbolic conquest.