That's because the leader of Israel isn't a moron. Unfortunately, the leader of the US is.
No, but sanctions have crippled their economy. Increasing the sanctions would do even more. NOBODY should do ANY business with Iran while their stated goal is the destruction of Israel.
If you limited them to military targets, probably. Of course, if I were Israel I would offer peace and when that failed, i would take out Tehran. You can't live in peace and harmony with rattlesnakes. Sorry to burst your bubble. When an enemy has pledged to kill you, you only live if you kill him first. That's the real world. Some evil is too profound to be dealt with civilly.
"Take out Tehran" - Murder millions of innocent people, nice guy aren't you.
That worked well for Iraq, didn't it? The only thing that worked with Iraq is the personal greed of the scientists who took the money and faked the research.