To all PDF members who are asking why the supersonic missile wasn't shot down, what exactly do you demand from Pakistan's air defence? As far as fighter Jets are concerned, their movements and speeds are relatively slow, with their flight paths predictable, and they can be countered through various means you all know. But expecting Pakistani forces to destroy supersonic missiles in the middle of no where is going to be too much expectation from any air defence. Let me explain:
Most supersonic missile systems are countered through point defence systems, which are only installed at strategic locations. Such point defence systems not only counter supersonic missiles, but sub-sonic cruise missiles, drones, artillery, fighter aircraft etc. The rest of the area of the country (civilian) is covered by long range air defence such as HQ-9 which can PRACTICALLY only work against fighter jets in such a dense environment where Pakistan's thin profile only gives 20 seconds to make a decision. The remaining work HAS to be done by point defence systems like SPADA, or some new Chinese point defence.
If you demand that a supersonic missile should be shot down in a city like Mian Channu, you all should pay for a point defence system for every village near the Eastern border, so that every drone, and supersonic missile can be shot down under 10 seconds after entering airspace automatically without any input, alleviating us from the "Sir Kya karain" concern.
The fact that Pakistan was tracking the supersonic missile 100Kms inside Indian territory, and Pakistan Air Defence was in red alert in Multan, Bahawalpur, Karachi, and Kashmir, 10 seconds after the missile violated our airspace, is good news for me. We must realize that supersonic missiles will ALWAYS be a problem for Pakistan, because we cannot line the 3300Km border with quick reaction autonomous air defence systems.
The solution to this whole scenario is to make sure we have the best possible point defence system from China for our strategic locations and air bases, so that supersonic missiles cannot initiate a decapitation strike, and give Pakistani forces enough time to retaliate with their own strategic assets. If supersonic missiles are used to harass civilian populations along the border, they are a wasted resource. The penetration of Brahmos missile into Pakistan airspace has proven nothing. The credibility of Pakistan Air defence has not been compromised in my opinion. I completely believe that Pakistan has the capability to protect its strategic assets from supersonic missiles.