Does national security require institutionalised supremacism?

Answer 1

You make the assumption that security needs to be a national issue. First you have to accept Nationalism, then supremacism, and then create institutions which work to secure it's future. I guess you could consider the Vatican as institutionalised supremacism, and then you don't need nationalism first. The exception to the rule.
Who or what decides that a nation is a physical thing that needs so much security? If American means freedom, then it is an idea, rather than a country, and it could possibly become a type of dispersed group, without borders. It depends on whether you can find some common way to keep people connected with it. Borders not only make security convenient for internal forces, but they politically mark where the target lies for external forces.

Answer 2

No.National security will never come by crying wolf.