Both wanted land in Poland, but didn’t want to go to war with each other, yet. So, they signed a non-aggression pact, not an alliance, saying that neither would go to war with each other for ten years, nor would they assist anyone at war with the other. Of course, that lasted two years before Hitler decided that Stalin had to go.
Between France and England.( Britain)
Not really,
It is reliant on the intensity of the attack as well as the power of the attacking nation.
some countries have been attacked and literally never fought back but surrendered if the attacking nation is more powerful in terms of military power.
in case the intensity of the attack can be absorbed, a country can also opt for diplomacy as war is the ultimate sanction in international relation.
in case the country feels it has the capacity to protect its sovereignty then fighting back is the only option.
Hey are all living glad to help