Agree with Tigs, Israel has no choice. The Arabs hate Israel and will only be satisfied with the total destruction of Israel. You can't negotiate with people who have such clear intent, they are indoctrinated from birth.
Hizbollah are manipulated by Iran, a country with nuclear ambitions and a president who says Israel should be wiped off the map
It's terrible to see Lebanon in such a mess again, but they have allowed attacks on Israel to be undertaken from their territory. UN is the usual toothless tiger.
I expect the arab nations may hit back at the west with oil prices/supplies as they have done since the 1973 war.
There will be no end to this, just the occasional pause.