The last part of your comment is pretty ironic. You realize that a UN resolution has absolutely nothing to do with NATO being a defensive alliance? It does not matter if they were "mandated" to attack a country that did not attack them first, it is still by definition agression. A defensive alliance would imply a reaction to an attack on your alliance, not on anything else.

If NATO only needs whatever vote it deems necessary to attack a completely uninvolved country because of a completely internal conflict, you realize that literally proves that it is not the type of neighbor you want to have?

What a completely self defeating argument lol. And that's ignoring the totally defensive strikes against serbia. Which for the record I personally think were justified, but supporting an intervention does not mean the intervention suddenly becomes defensive.