I think that all the anthropologists who have gone around to remote tribes all over the world, and found a variety of social practices both incredibly violent and remarkably peaceful, would disagree
I don't think there's such a thing as violent / non at a societal level. There are nations at war, and nations at peace, and the ones at war use violence and the ones at peace do not.
> such a thing as violent / non at a societal level
I do think it is, once it becomes a part of the culture it is very hard to get rig of. Just read about Maori culture how it escalated with arrival of Europeans https://en.wikipedia.org/wiki/Musket_Wars
As a NATO member, they'll have to promise to spend 2% of their GDP on defense --
though once they make the promise they will probably be able to get away with spending less!
They can apply to join NATO/OTAN.
My comment here is just as daft as yours!