She may have seen cluster munitions at the fare.
But that picture shows an 84 mm combined impact/time fuze for a M-84 Carl Gustav recoilless rifle round and an 81 mm fuze tip for for 81 mm mortar round. The times fuze is quite nasty - you set it for distance (by flight time) with a view to have it detonate above or to the side of infantry under cover.
Neither if these are cluster munitions, however. I’ve used both back in my army days.
So if that picture is her proof she’s at best misguided.
I can’t wait to get downvoted for facts.
Cluster munitions has a clear definition. It acquired a clear definition when the treaty was drafted. Cluster munitions release a … cluster (group) of smaller munitions that themselves explode on impact:
Fragmentation munitions break apart and the fragments cause death and destruction.
If someone claims that she’s seen cluster munitions that were outlawed, she’s claiming to have seen cluster munitions that were outlawed, not fragmentation munitions. We may not like either, I certainly don’t, but one type is out of use in signatory countries and another type is not.
The picture she’s used it’s actually not even munitions, it’s fuzes, ie the thing that makes munitions detonate.
And in full detail, cluster munitions are still “legal” in signatory countries, provided the submunitions self-detonate after a time. The Oslo treaty was designed to prevent civilians, children especially, picking up unexploded submunitions. It wasn’t designed to prevent death and destruction in a military target.