Nuclear triad
Israel is known to have nuclear-capable aircraft and land-base missiles, with the addition of nuclear-armed submarines this would mean that they now have a full triad of land-, air-, and sea-based nuclear delivery systems some of which would be invulnerable to a first strike by an enemy for the first time in their country's history. No other nation in the Middle East in known to be in possession of nuclear weapons, even though Iran, Iraq, Syria and Libya have started development programs that were never completed.
Israel Defense Forces
Israel is known to have developed nuclear weapons. Israel does not officially acknowledge its nuclear weapons program. It is thought Israel possesses between one hundred and four hundred nuclear warheads. It is believed that Jericho intercontinental ballistic missiles are capable of delivering nuclear warheads with a superior degree of accuracy and a range of 11,500 km. Israeli F-15I and F-16 fighter-bomber aircraft also have been cited as possible nuclear delivery systems (these aircraft types are nuclear capable in the US Air Force). The U.S. Air Force F-15E has tactical nuclear weapon (B61 and B83 bombs) capability. It has been asserted that Dolphin-class submarines have been adapted to carry Popeye Turbo Submarine-launched cruise missiles with nuclear warheads, so as to give Israel a second strike capacity.