Personally, I see no point in having nations at all. We'd be better off if we'd just smarten up and band together under one single banner, completely doing away with all the current ones. Every. Single. One.
The concept of multiple nations is outdated and stupid. It only causes war and useless political intrigue, and if we keep on with it, our own self-genocide. Nations and their borders mean nothing to me, only the people living within them.
Their deaths were caused by massive amounts of stupidity on all sides of the human race, and unless we, as a species, smarten the hell up and band together as one, their deaths will forever be in vain.