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.
Treaty on the Non-Proliferation of Nuclear Weapons
Over the years the NPT has come to be seen by many Third World states as "a conspiracy of the nuclear 'haves' to keep the nuclear 'have-nots' in their place". This argument has roots in Article VI of the treaty which "obligates the nuclear weapons states to liquidate their nuclear stockpiles and pursue complete disarmament. The non-nuclear states see no signs of this happening". Some argue that the NWS have not fully complied with their disarmament obligations under Article VI of the NPT. Some countries such as India have criticized the NPT, because it "discriminated against states not possessing nuclear weapons on January 1, 1967," while Iran and numerous Arab states have criticized Israel for not signing the NPT. There has been disappointment with the limited progress on nuclear disarmament, where the five authorized nuclear weapons states still have 22,000 warheads among them and have shown a reluctance to disarm further.