Israel may not be the only country in the area with nukes. The Saudis financed the Pakis nuke program and they are said to enjoy 'close military relations' so if they dont have nukes in the country they have ready access to them. Paying someone else to develop a technology saves you from being seen to do it yourself.
But then it may have been a bit of charity towards a Muslim brother country with nothing expected in return.
Saudi Arabia and Pakistan's nuclear weapons pact - Business Insider