I appreciate that you came back to the thread. We are not communicating very well. After a cursory review of our dialog I suggest that you might give a closer reading of my posts.
"Libertarianism ... attempts to argue WHEN force is justified (in defense of life, liberty and property)"
What you describe above is the reality of our political standing order. D's and R's do exactly this and every political debate hinges on this justified use of government's force.