I hope someone invents a cluster bomb with a detonation percentage above 99%.
Currently its less than 84% often that means over 400 unexploded bomb-lets, which are a real pain for both civilians and our own bomb disposal squads.
A 1% or lower failure rate would persuade me to support cluster bombs fully.
I am totally against cluster bombs that act on "booby trap" fuses that only go off when tampered with.