It is doubtful that Western sanctions have had any effect on Russia’s behavior but that doesn’t mean that the sanctions don’t work. They will be good bargaining chips some day when things are less emotional.
It looks like Estonia will buy a EuroSpike anti-tank missile system, since no other company has made a bid in the competition. Spike is a well-tested missile with a long range and sophisticated features. This is the second step in the modernization of Estonia’s anti-tank force, which began when they acquired the smaller Javelin missile a few years ago.