Floyd, free nations are like free people.
Imagine it this way. What if you had an agreement with your neighbor that you would defend each other if the government tried to trample your rights. One day, the government contacts you, knowing that with you out of the picture it can easily violate your neighbor's property rights and maybe even take away his firearms. You discuss the matter with the government, and instead of standing by your neighbor, you agree to let them take your neighbor's freedom, so long as they don't take anybody else's.
That's essentially what happened. France was committed by treaty to defend many of Germany's neighbors. At Munich, it, along with the UK, abandoned its allies, and allowed to Germans to violate Czechoslovakia's property rights.
It's retarded to appease any organization that is committed to extending its domination over others. Just as we know that we should prevent our own government from violating our neighbors liberties, so do we know that we should keep hostile powers from violating the rights of friendly powers.