Article 1
No person, group of persons, or government may initiate force, threat of force, or fraud against any individual's self or property.
Article 2
Force may be morally and legally used only in self-defense against those who violate Article 1.
Article 3
No exceptions shall exist for Articles 1 and 2.
Article 2 is redundant. Article 1 says no one shall
initiate force; therefore force may be used if you don't initiate it.
Article 3 is redundant. Since Article 1 and 2 don't list any exceptions then there aren't any.
Article 1 is excellent and is the standard libertarian non-aggression principle. It's basis may be found in the more fundamental philosophy which turns up everywhere: the golden rule, expressed in many different ways:
Do as thy woulc be done by.
Do unto others as you would have them do unto you.
An eye for an eye, a tooth for a tooth
That which is hateful to you, do not do to your fellow. That is the whole Torah; the rest is commentary.