Cambodia unveils a statue of famous landmine-sniffing rat Magawa

https://www.bbc.com/news/articles/c0rx7xzd10xo

Cambodia unveils a statue of famous landmine-sniffing rat Magawa

The statue honours the late African giant pouched rat who sniffed out more than 100 landmines during his lifetime.

Sadly demand for heros may increase in the future. Poland, Lithuania, Latvia, Estonia, Ukraine and Finland withdrew from the Ottawa Treaty banning personnel mines. And probably more countries will follow.
Is that their fault or is there maybe a giant reason nearby why they are doing this?

Whatever the reason, this will increase the likelihood of landmine casualties in the future. And not necessarily (only) in this area, but it weakens the treaty in general.

Part of these kinds of treaties is to accept some additional difficulty or expenses in defence for a more widespread benefit. I'm living in Finland and I would have accepted these.

With an expansive Russia next door it's hard to forego effective defense measures.
I'm in Finland and I would have forgone this measure. It is not a critical, or even an important, part of the defence strategy.