This war in Israel is really the perfection example of how God allows evil in the world: for the time being, "ending the evil in the world" would involve killing EVERYONE.
If Israel truly wanted to FORCE this, they'd have to wipe all Palestinians (and probably a large number of Arabic Muslims) off the face of the earth (genocide).
If the Palestinians wanted no more retaliation from Israel, every last Jew would have to be killed.
In reality, neither side is going to (nor should they!) get their way.
Just like God, we all have to deal with the horrid situations around us because the alternatives are too costly.