But just for the record let me say that I think Israel has a right to protect herself. Furthermore in a state of war I don't think they need to warn individual combatants. If fact I think the best think would be to drop the semantics and call it what it is: "War" (not conflict) and then let the rules of war apply. Obviously the Palestinians have no problem with targeting civilian populations. So this is war therefor Israel should do what one does in war. --take out its enemies. Period.
If Mexico was lobbing bombs on Los Angeles I don't think the USA would take long to respond with devastating force. That is exactly what Israel should do right now.
The only reason do not want Israel to respond is they like the idea of Jews being killed.