I will reply with one word: RUSSIA

If NU is not in NATO or in other similar military alliance then NU wont have anything to protect itself if it is attacked by some other nation.

Germany is friend now, but nazi stuff wasnt that long ago..... nations change. I am not advocating for war, I am just from nation that has been invaded by our both neighbors too many f* time. (Sweden tried even to steal our islands)

"We have no need for a defensive military" do you expect that there will not be wars in europe in next 100 years? I can guarantee that some kind of war will happen in or near europe in 20 years, world is not as peaceful as you seem to think.

BTW. "We have no need for a defensive military" does that mean that we need offensive military?

Voluntary military system would have good troops, but if some nation bigger than Estonia attacked those troops would not be enough. Mandatory system would at least provide enough troops, but they would not be as good as inn voluntary but the numbers would cover that problem.

Mandatory military service (for men) is in use in Finland and there is not much of complaining about it. something like 60-90% people support this type of military system in Finland.

Nuke would be good as a fear factor considering that 2 of NU´s neighbors have nukes, of course it would not be used unless someone uses their against us. I dont think that even russians deserve to die because some ´trigger happy` bastard.

Joint-energy-program would also be good one to try as it would help energy providing across NU. I would like to have some sort of joint-train system that would allow travel between Helsinki and Copenhagen but that would require Finland to build new type of rails and demolish old ones as they wont work with EU train tracks. Current rails in Finland are build to match Russian rails.