Ukraine MOD has a program in place that databases every cluster munition fire mission. Demining eastern Ukraine is going to be a years long effort. Any unexpended ordinance will go into that effort. Countries that gave up cluster munitions have had their rose tinted glasses on too long and assumed war would be limited to foreign battlefields and not their back yards.
Your definition of the meter leaves out the most interesting part. Yes, it was 1,000, 000th the distance of the equator to the North Pole, but how far is that? That wasn’t known accurately in the 18th Century. So, two Frenchmen, Delambre and Mechain conducted the longest meridian survey every attempted. They also did so while half of Europe was at war with one another. It was an amazingly dangerous endeavor. There is also significant evidence they totally flubbed and hand-waived their results. So, although their science ended up being questioned, the process and method was accepted and the Meter was defined.