Russia left 25 years ago. They have better things to do than taking over Estonia.
But I guess it will result in upping the economy becoming a army base for Nato. Signing up to be cannon fodder on the front line of a greedy Nato is dangerous.
Estonia’s got a long history with Russia. They fought a war against the Bolsheviks in 1918-19 to keep from being “liberated” by Lenin. Then they helped Latvia (to the south) fight for its freedom in 1919-20. In 1940 they were given to Russia by Hitler in the Molotov-Ribbentrop treaty, and the Russians spent a year arresting/killing/deporting around 10% of the population. When the Soviets came back in 1944 as Germany was collapsing, they took out another 10% (or more) of the population. There were still anti-Soviet guerrillas in the Estonian forests well into the 1950’s.
This has nothing to do with being NATO cannon fodder. They just don’t intent to go down without a fight.
Estonia is one of the 6 NATO members who actually meets the NATO spending goal as % of their GDP. Also the militia volunteers shown in the documentary are in addition to that as they don’t get paid.