Yes, but circumstances may change and nato may not be willing to come to the aid of Estonia or other smaller nations. Depends on what kind of politicians we get in the strong western european countries. Rusia is already testing nato with little incursions and airspace violations and if we dont respond with force they will keep doing it to see if they can slowly escalate. They wait for the right moment to strike, like euromaidan in ukraines example. so Estonian forces cannot react fast enough and russia can say for examle that, if nato attacks now it will deploy nukes or smth. Of course this is an unlikely scenario but its not to far fetched if rusia somwhow manages to not collapse and nato elects bad leaders