Not all countries can or wish to share America's defense spending tactics. Nor should they be coerced into it by specious scare tactics like "invading armies, such as from Russia".
Before you begin your counterattack with "Crimea!" and "Ukraine!", those issues may provide Russia with at least a shred of plausible deniability because history. To my knowledge, Norway has no such recent links with Russia. An invasion of Norway by Russia ranks pretty low on the likelihood list.
Slobodan may come to your defense. Apparently he knows more about Russia than I do.
The fact remains that Norway has an account balance vs the western nations' account balance that ranks in the multiple trillions of dollars. That is a result of careful (social) management, not capitalism.
First, my opinions on Crimea and Ukraine and Russia are currently indifferent, so long as we do not get involved. That is another country many 1000s of miles away, and the amount of time our press and former president gave to that conflict was ridiculous. I could care less what happens there.
Moving one, I don't expect other countries to spend like we do on the military, and I really wish we did not spend as much as we do. I think the number should be halved or more. Let us go back to pre-WWII military size and spending. There is no reason we should have a military as big as we do, especially since the idea of an army invading the USA is crazy due to the Atlantic and Pacific, and our (currently) friendly neighbors above and below. Canada will never become hostile; Mexico will probably become/continue to be more upset with us, but I doubt ever hostile.
So, if we were to cut spending as far as I would like to see it and stop policing the world, that would mean many others would need to pick up the slack and spend money, taking money from other areas.
Moving onto Norway, it is a small country with a population that is very homogeneous. Operating a country such as that is much easier than a large swath of land with many different peoples and many different ideologies. Socialism will work better there, but probably not as much as capitalism, but in the USA, you're crazy to think it could be applied here. Plus, Norway is not really socialist, aka "a political and economic theory of social organization that advocates that the means of production, distribution, and exchange should be owned or regulated by the community as a whole."
As far as I know, you can still own your own business and property in Norway. If you want to talk socialism, lets talk about Cuba and Venezuela, or even better the DPRK.
Our economy is too large and effected by too many uncontrollable things (like our huge differences in weather) to even dream of making socialism a success.
I just find it crazy that if you look at history, capitalism worked the moment it was created, but pure socialism has yet to work in any country it has been applied to. Did the capitalist just get lucky right out of the gate and the socialists are still trying to find the secret sauce to make it work?