On the contrary, fundamentally the Afghan Republic, plus India, US and NATO were a major strategic threat
The Taliban and TTP are just a mess
Either way you have deluded, untrustworthy afghans to deal with but the afghani Republic was intent on being a enemy of Pakistan and linking up with India,the fall of the Afghan Republic and running India out of Dodge was a LEGENDARY victory that will never be truly appreciated for what it was
There was ALWAYS going to be fall out, the question was how much fall out and how we would control it
You also have to look out for the Aghwan Republic supporters looking to incite problems with Pakistan
Listen, bro. There is a lot to unpack in this theme. And you will not like some of the details.
The establishment was hedging its bets on Afghan Taliban, right? Why was this intent not conveyed to US openly? Why the establishment granted US access to Afghanistan without presenting (any) terms and conditions including talks about what US will do to protect regional interests of Pakistan in exchange?
Then American ambassador Wendy Chamberlain presented a list of seven demands to the establishment and they were all accepted blindly without documentation and analysis of what Pakistan could realistically do for US.
Afghan Taliban were allowed to regroup and receive medical treatments in Pakistan.
US-backed Afghan government was at war with Afghan Taliban and this was the root cause of Pak-Afghan tensions throughout.
India made inroads into Afghanistan via Iran and took advantage of Pak-Afghan tensions to do its bidding.
US was focused on dismantling Al-Qaeda Network in the region (Primary Target), but also assassinated top leaders of TTP to disrupt its cohesion to make it easier for Pakistan security forces to fight it. US provided cash, numerous weapons systems, and guidance to Pakistan for how to improve security of its nuclear infrastructure as well.
The establishment was lacking in planning for how to negotiate its part in the War On Terror saga.
Pakistani commoners were made to believe in narrative(s) like "aalmi saazish" to keep them distracted on the other hand.
US could see the obvious, settled for an alternative solution (for itself), and bailed.
The outcome?
Afghan Taliban = not pleased = not touching TTP
US = not pleased = not offering much to Pakistan
BLA continues to find space in Afghanistan and launch attacks in Pakistan.
TTP continues to find space in Afghanistan and launch attacks in Pakistan.
Afghanistan = economic crisis
Pakistan = economic crisis
But Khan (handsome) was conveniently blamed for damaging US - Pak relations in the end.
US now see India in much more favorable light.
India can establish contacts with Afghan Taliban as well.
It shows that Pakistan has no system and national coherence to manage its Foreign affairs. The establishment gets to decide what to do and does not believe in Transparency and Civic Engagement to manage issues of national interest.
So much for strategic depth.