British empire not only helped KSA but also India Pakistan Egypt Turkey etc. So does that mean these nations should cease to exist?
Israel aggression exists because of Iran and its proxies who give Israel justification to attack and invade Palestine and Lebanon territories. After Iranian strikes on Israel, not only has Israel retained its occupied territories but also GAINED more territories.
You cant even nuke Ijrael without risking whipping out Palestine because Palestine is right in the middle.
In a nuclear exchange conflict, Israel will inflict more losses on Muslim world. It would be 10 million losses on their side and 200,000+ million on Muslim world.