Actually, the weapon the whole world needs is one that destroys all weapons with no collateral damage. If Israel were able to pinpoint and destroy all weapons without injury to people, its problems would be solved. Then Israel would be able to concentrate on making life more livable for everyone in the region. Until such a weapon exists, the only choice is to use targeted weapons that cannot avoid killing others. Therefore, Israel needs to continue training to use what it has. One thing to remember in this battle of who the victims are is where people would be free to live and become citizens. Arab Muslims and Christians are able to do so in Israel. Jews are not able to do so in Arab nations.
High school teacher's union threatens strike (Haaretz)
from the article: Israel's 'right to self-defense' - a tremendous propaganda victory