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.
Nuclear artillery
Belgium, Canada, Germany, Greece, Italy, Netherlands, Turkey, and the United Kingdom provided artillery units trained in the correct handling and operation of nuclear weapons and in some cases specialist logistic and security units. Their allocated nuclear weapons were in the custody of US Army Artillery Groups (USAAG) with subordinate US Army Field Artillery Detachments (USAFAD) assigned to the national artillery units. The Groups were part of the 59th Ordnance Brigade.