Check out this logic

Israel: US report on Iran may spark war

Israel's public security minister warned Saturday that a U.S. intelligence report that said Iran is no longer developing nuclear arms could lead to a regional war that would threaten the Jewish state.
Dichter cautioned that a refusal to recognize Iran's intentions to build weapons of mass destruction could lead to armed conflict in the Middle East.
"The American misconception concerning Iran's nuclear weapons is liable to lead to a regional Yom Kippur where Israel will be among the countries that are threatened," Dichter said in a speech in a suburb south of Tel Aviv, according to his spokesman, Mati Gil. "Something went wrong in the American blueprint for analyzing the severity of the Iranian nuclear threat."
Dichter didn't elaborate on the potential scenario but seemed to imply that a world that let its guard down regarding Iran would be more vulnerable to attack by the Islamic regime.

Translation:
Attack them first.