I wouldn’t expect NATO to.
>>”I wouldn’t expect NATO to”
Neither would I. But they’re obligated to do so by the NATO charter. That’s the whole point of it, which begs the question - what’s the point of being a signatory to a mutual defense treaty if the other parties have no intention of honoring their commitment? We’d do better going it alone. If we determine at some point in the future that it’s in our best interests to cooperate with countries in Europe, then we should deal with it on a case by case basis.