If the iranians drop a nuclear bomb on Tel Aviv it would without question only be in return for an israli nuclear strike on Iran. After all, all history shows that the privilege of striking first have always been on the israeli side. No one would even consider to strike first with nukes unless you thought you had a working shield and the back-up of a superpower.
Jewish teen sustains moderate wounds in stabbing in Jerusalem; assailant shot by police (Haaretz)
from the article: Speaking about Iran, Israel's leaders are delirious