As accurate as the delivery system. It is like throwing a water baloon.
A cluster bomm is comoposed of a shell containing the bomblets that butsts open before hitting the ground and scatters out the bomblets, which should explode on contact with the ground spreading a wide area of shrapnel. Many do not explode though and just lie theire till disturbed by children, etc. the "shell" can be fired by artillery, missle, bomb from plane, etc....
yep. pretty much if the set the delays and such right.