You're quite naive to suppose SPD or military could stop proliferation. Firstly the SPD or Pakistan's NCA wasn't formed when the alleged proliferation happened. Secondly military wasn't partof the nuclear prog. only a certain part was. however A.Q Khan had complete liberty to do all he wanted to.
There are no fathers and mothers of any programe but rather a team effort. A nuclear fuel cycle requires literally thousands of process which require thousands of scientists, engineers and technicians. A.Q was the head of only one part i.e. uranium enrichment. To call him the father is grssly...
Hypersonic technology is a virtual overkill. In India-Pakistan terms it wont make much of a difference in time as the distance is already very less. however it would damage the deterrence stability of the region by either side having to make their nukes on an assertive control.