>lol didn't work for the French
The Nazis went around it. (And they also had air supremacy.)
What I'm proposing is a massive combination earthen/man-made barrier along the entirety of the collective non-maritime border with Russia/Belarus to protect the Baltics.
Why aren't they doing this right now?
>It's a provocation
How?
If you own a home and your neighbors all fence in their properties, you get a FREE fence (at least on three sides).
Do you think the US would look askance at Canada or Mexico building a massive, military-grade barrier that would have the effect of eliminating almost all illegal border crossings?