you are presuming that Iran will not retaliate to Israeli attacks on Tehran, which is fair enough. I believe that Iran and it's proxy will fire missiles at Tel aviv daily until Israel surrenders. Any other thinking, even if this is the worse case scenario ibelongs to the realm of cloud cuckoo land.
27 injured in fire, explosion at former air raid shelter in Hamburg, Germany (DPA)
from the article: Israel attack wouldn't stop Iran nuclear program, says U.K. study