In is defensive only on paper. In reality it is NATO weapons that supply wars in Middle East. Joining NATO isn't just mutual defense, you need to sign a lot of other requirements that inevitably gets you under strong influance of US military and finances. Check out military intervantions of NATO, they are all offensive, no one ever attacked a NATO country, they are too strong. https://en.wikipedia.org/wiki/NATO#Military_operations
None of these counties they invaded where part of NATO, Iraq, Afganistan, Kosovo, Bosina, Libya.
Laws don't matter when you have the military power. Laws only apply to the weak. Powerful countires (and people) don't protect them selves with laws, since they have the military. When Assange and Manning published US war crimes, militry officials didnt go to jails, but they, whistlblowers and journalists did. Don't fall for the laws for a second, they don't apply to them.