Let's ask Bibi:
"During an interview with Israeli prime minister Benjamin Netanyahu in March 2011, Piers Morgan posed a serious question:
MORGAN: Do you have nuclear weapons?
NETANYAHU: Well, we have a longstanding policy that we won’t be the first to introduce nuclear weapons into the Middle East, and that hasn’t changed.
MORGAN: So you don’t have any?
NETANYAHU: That’s our policy. Not to be the first to introduce nuclear weapons into the Middle East.
"Despite the word games, it is well known that Israel has been a nuclear weapons power for forty-five years. As several Israeli historians and journalists have revealed, Israel crossed the nuclear threshold on the eve of the Six Day War in May 1967.
"Summarized by Patrick Tyler in his book, A World of Trouble: The White House and the Middle East—from the Cold War to the War on Terror:
“[Prime Minister Levi] Eshkol, according to a number of Israeli sources, secretly ordered the Dimona [nuclear reactor] scientists to assemble two crude nuclear devices. He placed them under the command of Brigadier General Yitzhak Yaakov, the chief of research and development in Israel’s Defense Ministry.
"'One official said the operation was referred to as Spider because the nuclear devices were inelegant contraptions with appendages sticking out. The crude atomic bombs were readied for deployment on trucks that could race to the Egyptian border for detonation in the event Arab forces overwhelmed Israeli defenses.”
http://blogs.cfr.org/zenko/2012/03/05/israels-nuclear-weapons-program-and-lessons-for-iran/
"During an interview with Israeli prime minister Benjamin Netanyahu in March 2011, Piers Morgan posed a serious question:
MORGAN: Do you have nuclear weapons?
NETANYAHU: Well, we have a longstanding policy that we won’t be the first to introduce nuclear weapons into the Middle East, and that hasn’t changed.
MORGAN: So you don’t have any?
NETANYAHU: That’s our policy. Not to be the first to introduce nuclear weapons into the Middle East.
"Despite the word games, it is well known that Israel has been a nuclear weapons power for forty-five years. As several Israeli historians and journalists have revealed, Israel crossed the nuclear threshold on the eve of the Six Day War in May 1967.
"Summarized by Patrick Tyler in his book, A World of Trouble: The White House and the Middle East—from the Cold War to the War on Terror:
“[Prime Minister Levi] Eshkol, according to a number of Israeli sources, secretly ordered the Dimona [nuclear reactor] scientists to assemble two crude nuclear devices. He placed them under the command of Brigadier General Yitzhak Yaakov, the chief of research and development in Israel’s Defense Ministry.
"'One official said the operation was referred to as Spider because the nuclear devices were inelegant contraptions with appendages sticking out. The crude atomic bombs were readied for deployment on trucks that could race to the Egyptian border for detonation in the event Arab forces overwhelmed Israeli defenses.”
http://blogs.cfr.org/zenko/2012/03/05/israels-nuclear-weapons-program-and-lessons-for-iran/