I dont believe Israel even does want to take Tehran down. They need each other.
I completely agree with ovarel. It can sound weird but in the reality Israel and Iran need each other. In the world, there is a perception that Iran and Israel are the two eternal enemies, because they snarl at each other, threaten one another to volley bombs and destroy the enemy from the earth!!! They actually pretend as if they fight each other and draw attentions of the world. But, in fact they use this hostility to support their positions. How? Here it is how;
Iran and Israel are the two assertive regional powers in the Middle East and both countries need some dynamics to continue their existence. In order to get their citizens` supports and get them united, Israel and Iran need an enemy who threats them to destroy and erase from the earth. Israel is a country established lately in the ME with the Jewish people who came to Israel from all over the world. Think about a country that is very small, her citizens are from all over the world, speak different languages, have different races in the ME where a Muslim region. So, in order to be a united nation, Israel needs a real strong and convincing enemy. Threat of Iran Iran nuclear weapon enrichment Iran`s supports to the Hamas and Hezbollah etc. are the dynamics that help Israel to manipulate and control her citizens, and also those dynamics help Israel to excuse her cruelty and violence. Therefore, Iran`s existence, her attitudes and behaviors and message as if she fights with Israel give Israel very good supports in the world such as;
Supports of western countries,
Getting away with her cruelty and violence,
Controlling and manipulating her citizens,
Opportunity to divide Muslim worlds (the thought that Iran fights with Israel provides sympathy to Iran and Shi`ism),
Supports of the Jewish people who live in the different countries,
Maintaining the fears of Christians against Muslims so that using those fears to hide Zionist ideas.
What about Iran?
Throughout history, Iran tried to be most important actor in the muslim world. However, unlike other muslim countries such as Ottomans, Seljuks, or Umayyads, Iran did not fight with western counties to spread Islam. Instead, Iran spent her efforts to spread Shi`ism into the Sunnies. In order to be influential country and spread her ideas, believes in the muslim worlds, Iran needs to advertise some strong dynamics. The help to miserable and helpless Palestinians, threat to Israel to destroy and erase her. Think a second, most of the muslim countries are dependent to USA and western countries, they cannot do anything but just condemning Israel. However, unlike them Iran is harshly and strongly against Israel. Iran also uses these things to manipulate, console, and control her citizens, get them united, shut the domestic oppositions up.
The cooperation does not only take place of being in the same team, but it can occur while being in the different teams. It is just matter of how you pretend to be enemy