A nation must be able to defend itself

Sometimes the only way to win is not to play. Neutrality could be based on a desire to continue business with both sides (Norway was continuing to ship iron ore to Britain and to Germany), or a realistic assessment of the differences in military strength (Germany had a much larger and better equipped army). But if the bully is going to attack anyway, you may as well fight.

I wouldn't really say defenseless when they have big brother USA to look after them and are in NATO now. Before, I guess it's the now silence = violence or as you say, neutrality = surrender. It they weren't sympathetic then they just didn't want to get involved in bullies picking on weaker nations knowing you're the same one as well. Apes strong together as Ceasar once said. Also, they spend most of their money on social services and universal healthcare which is why it's one of the best and happiest place to live. They're like the hippy nations of peace and love but can't do shit when bullies are around.

I guess it depends on your neighbours

western Europe is pretty civilised these days .
I dont think Spain has to maintain an army just in case France decides to invade.

I'm not an expert, but even today, Norway has like 7% the population of German(or 4% the population of Russia). I think it would be a challenge for any country with this much difference in population to expect to come out the victor.

I always wanted America to invade Norway. This would grant us oil, money and a strategic position close to Russia. This along with Saudi Arabia. Those who would could to live under American values. The rest killed flat out.