Cluin:

Legitimacy derives from human agreement.

When a mass of humans comes to the consensus that they are under threrat of survival for their very lives, and that physical overwhelm is the only remedy that will cure thew condition, they will legitimize the use of physical violence.

I think your question is a fair one, because any such condition must be predicated on an earlier failure if dialoge and imagination and creative solution, unless one is dealing with a complete psychotic. On an individual level, of course you can sometimes still find yourself confronting a pure-dee psycho. But I feel among nations, it is a contrived condition built on the dissemination of lies and fear-mongering.

Despite that, it has happened several times just inthe last century that the U.S. and U.K. have gone through just such a cycle of legitimzing and deploying violence.

A