Not everyone, even in Israel, supports Netanyahu's warmongering. Many prominent Israeli officials have opposed Netanyahu's push to start war with Iran:
Bombing Iran is
"the stupidest thing I have ever heard. Anyone attacking Iran needs to understand that it could start a regional war which will include missile fire from Iran and Hezbollah in Lebanon." - Former Mossad director Meir Dagan
"They [the Netanyahu administration]
talk too much, they talk too loud. They are creating an atmosphere and a momentum that may go out of their control. There is no reason at this time . . . to initiate an Israeli military strike." - Former Prime Minister Ehud Olmert.
Former prime minister says it is ‘definitely not’ time for military action against Tehran
web.archive.org
"Iranian leadership is composed of very rational people who will not decide to build nuclear weapons." - General Benny Gantz, Israeli Army Chief of Staff.
"I don't believe in a leadership that makes decisions based on messianic feelings. . . . one of the results of an Israeli attack on Iran could be a dramatic acceleration of the Iranian nuclear program." - Yuval Diskin, former chief of Shin Bet, Israel's national security agency.
April 29, 2012 JERUSALEM (JTA) — Israeli leaders’ judgment has been clouded by “messianic feelings” and they cannot be trusted to decide to launch a military strike on Iran, Israel’s former security chief said. Yuval Diskin, the former head of Israel’s Shin Bet security agency, said in a speech...
stljewishlight.org
"Foreign Minister Tzipi Livni said a few months ago in a series of closed discussions that in her opinion that Iranian nuclear weapons do not pose an existential threat to Israel. . . . Last week, former Mossad Ephraim Halevy said similar things about Iran."
Ha'aretz, October 5, 2007
"Israel's prime minister and defense minister seem anxious to go to war, and the sooner the better, a determination not shared by most of their own generals and spy-masters, past and present, a majority of the public, the current (and at least one former) president, and even a sizeable portion of the inner cabinet.." Douglas Bloomfield, Chicago Jewish Star, September 14, 2012.
My comment - it is my perception that the big push for America to get into a pre-emptive war with Iran comes not so much from Israeli leaders or the Jewish general public in Israel or America. Rather, it comes from the extremist Christian Zionists in America, followers of the charismatic megachurch preacher John Hagee and his "Christians United For Israel" organization, who are lobbying for war with Iran in order to fulfill their speculative prophetic scenarios about the "Armageddon Theology."