A) necessary for stopping the butchering of palestinians,

B) had any chance of stopping the butchering of palestinians in general, as opposed to giving israel the perfect excuse to start carpet bombing with no restraint

This implies that you have proof that the killing of kids was intentional (IF it even happened, there's still no concrete evidence for that yet either).

Do you have proof?

Because saying "killing kids is bad" will not convince me that Hamas is actually doing this.