Proportionate response = Carpet Bombing?

Israel has been at war since 1948 and has won in every conflict except the recent conflict with Lebanon. That stalemate, for want of a better description, was partially caused by Israel's prior warnings to Lebanese civilians about where Israel was going to drop bombs or otherwise attack. The Israelis did this so as to lessen civilian casualties.

Israel is, again, warning civilians, both innocent and enemy, about upcoming attacks, in Gaza. Israel tries to reduce civilian casualties and suffering by utilizing pinpoint attacks and by sending in relief and medical supplies into Gaza, even while in conflict with HAMAS.

People around the world, from governments to the media to celebrities are demanding that Israel only react with a "proportionate" response.

Since HAMAS and Hezbollah both utilize random rocket attacks into civilian areas and advocate suicide bombings, should Israel begin firing rockets into Gaza and Lebanon civilian areas without targeting the terrorists?

HAMAS and Hezbollah state that all Israelis are military targets and therefore targets innocent civilians. Should Israel therefore carpet bomb Gaza?

Would all of you learned pundits and diplomats please let us know what YOU would find "proportionate?"