And... since NATO’s establishment, how many of its member nations were overrun by the Soviets during Cold War?
If Putin wants part of Estonia NATO isn’t going to stop him. If NATO was intending to military engage Russia they would deploy some units into the Baltics or Poland. That’s the thing to watch for. That NATO hasn’t done that tells you all you need to know. NATO forces will never get to the theater of war in time should Putin decisively move on Estonia.
NATO as a Cold War style military force is done. The banksters and corporatists running the west are not interested in a shooting war with Russia. Too much money to be made I guess.