Thats not an answer,its just fear.
A real answer would be the creation of a NATO like structure between all Arab nations.
Shows how devided they are,if they dont trust each other no sane Muslim country will trust them.
Pakistan is just thinking of its own interest(money) although this Shahbaz Sherif acts like clown,not a real leader.
Whats with the hugging,did he get a bonus(for himself) or something?
It is just making "more official" what was more discreet non-official thing for ~ 40 years now anyway.
i.e Saudi bank roles the nukes in exchange for immediate deterrent access should SHTF with say Iran.
That was large reason Saudis acquired DF-3s (static) and DF-21s (mobile) from PRC.
That too the DF-3s have relatively poor precision circle (this was still cold war PRC tech), so their only real use could be nuclear tipped.
It was late 80s acquisition, the US govt response to it (official and unofficial) is interesting to look at.
The DF-21 acquisitions were much later (mid 2000s), these do have much better precision along with road mobility and thus more official cover they are for conventional deterrent.
But still interesting ramification from US/West unwilling to arm KSA with ballistic missiles as consequence of what they officially see as some kind of perfidy in PRC-PAK-KSA triangle here....but in KSA deployment one the US gauges as almost entirely anti-Iran based.
Same kind of unofficial understanding KSA has with Israel who will always get overflight access to Iran in conflicts.
Same kind of bankrolling of Saddam by Saudis in Iran-Iraq war.
The "just enough" bankrolling of Pakistan mil establishment by KSA would happen with or without this deal made more official....as KSA wants to keep hedging what it can here....especially in light of Iran regime heavily bruised but not out and obviously looking to breakout with nukes if and when they can.
Making it more official adds more leverage for KSA to try get Pakistan on board with commiting to Yemen conflict (again from Iranian-Houthi alliance).... if that increases again later w.r.t KSA.
Imran Khan resisted that (this was part of reason Saudis started to squeeze a bunch of loan repayments in response at the time).... but he (and more broadly...any thinking like that in pak political class, they are supposed to not think and just understand they are a glove for the hand etc) is removed as obstacle now and Pak military will make more direct calls regarding that.