Their basic problem: relative size. Russia is the world's largest country, the Baltic republics are among the small nations. As such, they have no hope whatsoever of a conventional military defense against a Russian invasion.
Estonia is taking an interesting approach to its defense, related to that of Finland and Switzerland. It is encouraging its citizens to learn to be partisans, guerrilla fighters. See a very interesting New York Times article about Estonia's "military sport" competitions.
The Estonian Defense League claims nearly 25,000 members, who meet for weekend drills to learn military and survival skills, marksmanship, escape and evasion, and IED bomb making. The nation encourages its citizens to keep an assault weapon and ammunition at home, in a gun safe or hide. The article quotes a retired army corporal.
Partisan war is our way. We cannot equal their armor. We have to group in small units and do a lot of destruction of their logistics convoys. We needle them wherever we can.The Russians respect this type of defense, they utilized it to good effect against the Nazis in WW II. The idea is to be so obnoxious only a nation willing to kill every living soul wants to invade you. Them you cannot deter completely.
