You are really completely clueless, I have no idea why you keep posting comments that contradict your own comments but fine, whatever.
There are four different mutual defense pacts in Europe and there is an umbrella one and they all operate independently of NATO. And then there is NATO, with or without the USA.
I assume the contradiction you refer to is that EU has this clause but it's still not considered a military alliance? Maybe you read the term differently. It doesn't mean it has zero defense dimensions, it's that its mission or capability are not military. That's why NATO is the one a would-be invader needs to worry about wrt military consequences.
There are four different mutual defense pacts in Europe and there is an umbrella one and they all operate independently of NATO. And then there is NATO, with or without the USA.