Estonia and defence spending

Why does Estonia spend so much more on defence than Latvia and Lithuania? And is it a good idea? Cynics say that Estonia can't be credible in defence if the other Baltic two have in effect given up. Estonia should stop bothering with even vestigial territorial defence and concentrate solely on international obligations. I think that would be a big mistake. Defence spending is about credibility, both in military and political terms. Trying to meet the 2% of GDP target shows the Estonian people that the state is serious about defence (and therefore serious about other things. It also signals that to the outside world. Here Kurt Volker, the former US Ambassador to NATO, praises Estonian defence thinking. And in this speech
he gives some general thoughts about the Atlantic alliance.