Yes, but without the US (or stealing) they wouldn't. edited misplaced words...

https://en.wikipedia.org/wiki/Mordechai_Vanunu Mordechai Vanunu (Hebrew: מרדכי ואנונו‎; born 14 October 1954), also known as John Crossman,[1][2] is an Israeli former nuclear technician and peace activist[3] who, citing his opposition to weapons of mass destruction, revealed details of Israel's nuclear weapons program to the British press in 1986.[4] He was subsequently lured to Italy by the Israeli intelligence agency Mossad, where he was drugged and abducted.[4] He was secretly transported to Israel and ultimately convicted in a trial that was held behind closed doors.[4] Vanunu spent 18 years in prison, including more than 11 in solitary confinement, though apparently not "prescribed" by the Court, and further subject to broad array of restrictions on his speech and movement. Released from prison in 2004, he was arrested several times for violations of his parole terms, giving interviews to foreign journalists and attempting to leave Israel. He claims having suffered "cruel and barbaric treatment" at the hands of prison authorities, and suggests that these would have been different if he had not converted to Christianity.[5] ... http://i1.wp.com/21stcenturywire.com/wp-content/uploads/2015/04/1-Israel-has-Nuclear-Weapons.png https://en.wikipedia.org/wiki/Nuclear_weapons_and_Israel Nuclear program start date Unknown (estimated 1948 or 1949)[1][2][3] First nuclear weapon test Unknown (reported partner in early French testing 1960,[1] reported local Israeli underground test 1963,[1] reported Israeli test in Vela Incident 1979)[a] First fusion weapon test Unknown Last nuclear test Unknown Largest yield test Unknown Total tests Unknown **Current stockpile (usable and not) Unknown (estimated 80–400 warheads)[5][6][7][8][9][10][11][12][13][14][15]** Current strategic arsenal Unknown Cumulative strategic arsenal in megatonnage Unknown Maximum missile range Unknown (estimated up to 11,500 km)[b] **NPT party No**