Poland withdrew from the Ottawa Convention last month, with the aim of being able to lay anti-personnel mines along its eastern border.
Whether it does or not is an open-question, and while I understand it of course, the idea we're increasing the use of mines is a sad day. They're so indiscriminate and will no doubt cause injuries far into the future.
There's no border wall, just a typical bike road next to a small fence. So no, unless Poland is planning to blow up their own civilians, they won't mine their own country lol.
Placing landmines systematically during peacetime by a stable government-ran military should at least make clearing mines easier, and minefields better marked for locals. So, it's not completely indiscriminate. If it decreases war-related life loss (both direct and indirect), it's net positive
No one is going to build minefields, too populated area, too many wild animals. It's mostly about automatic mining - https://www.hsw.pl/produkty/pojazd-minowania-narzutowego-bao...