Landmines and cluster munitions have been among Ukraine's most effective weapons for resisting the Russian invasion. Without those, Ukraine would likely have already lost the war. It's so bizarre how some people who face no real risks themselves think that those weapons should be declared off-limits.
Nobody said they're not effective during a war, the problem is they remain effective against any random civilians who happen to stumble across them for a long time after the war is over. Potentially decades, as seen in Cambodia.
It would be a bit of a Pyrrhic victory to repel an attempted takeover of your land, only for that land to end up contaminated with literally millions of landmines because you didn't have a mutual agreement against using them.
People who are defending against an existential threat today don't have the luxury of worrying about contamination tomorrow. I think at this point Ukraine will take a Pyrrhic victory if the alternative is their end as a fully sovereign nation state. And let's be clear about the current situation: if Ukraine and Russia had a mutual agreement against using those weapons then Ukraine would probably have already lost. Landmines in particular are extremely effective as a force multiplier for outnumbered defenders.
