i respect ur personal views but y it concerns Pakistan that Afghanistan dont accept durand line ? i mean really ? if a country has a claim on around 50 percent of ur area would u have a normal relations ? if building blocks / base of relations are on mis trust/no respect of territorial integrity no one can build trustful/normal relations . N these are not relations after 2001 or 1979 its from the start ie 14 August 1947 . I Hope in relations between two countries you understand about respect of territorial sovereignty . we Pakistani in entire world love Ummah concept v much . Stay Blessed .
I don't like going down this train of thought as it sparks nationalism, but InshAllah I will try to my best to give a truthful answer.
When Pakistan was first established Afghanistan should have recognized Pakistan, but did not because of KPK, back then in Afghanistan Pashtun nationalism was fervent and they wanted to include KPK as part of that or at least make it autonomous. When the British were leaving they gave the Pashtuns a choice of either being with Pakistan or India, some wanted to be independent such as IPI faqir, Khan of Jandool, and others, while the majority voted to be with Pakistan, this led to frictions between both PAK and AFG, however the Pashtuns in KPK decided to be with Pakistan and that should have been the end of it, but unfortunately it was not and Afghanistan took an aggressive stance against Pakistan which soured our relations, however the Pashtuns who opted to be with Pakistan defended it against Afghanistan and I'll quote...
"The dispute, though flared up again at the end of 1958 in the wake of General Ayub Khan's military coup. Despite being a Pashtun, Ayuab had no time for Pashtunistan. In the crackdown that followed his declaration of martial law, 'Abd al-Ghaffar Khan and other Red Shirt leaders were once more arrested. The Afghan government demanded their release and when this was not forthcoming, 15000 tribal irregulars marched into Bajur in September 1960 claiming they were supporting the Khan of Jandool against his rival the Khan of Khar. Bitter fighting followed between pro-Afghan and pro-Pakistan militias, while Pakistan's America warplanes bombed Afghan positions and even conducted a raid inside Afghan territory." Page 555-556 History of Afghanistan by Jonathan L. Lee.
Why Afghanistan continued to pursue this policy of Pashtunistan is beyond me since it was mainly the Pashtuns who defended Pakistan against Afghanistan's policies, and it is also mainly the Pashtuns today who are defending Pakistan against Pashtunistan sentiments, they realized Pakistan was made on the basis of Islam whereas Afghanistan wanted to united it on the basis of Pashtun nationalism. But I ask such Afghans, if you want to unite those Pashtun areas on the basis of nationalism then what about every other nationality that lives in Afghanistan, such as the Pashai, Tajiks, Aimaqs, Uzbeks, Hazaras? Nationalism I believe is fitna and a hypocritical mindset, if you are going to be a qom parast or a nationalists then what about everyone else who was not born in that nation or qawm?
This is also the reason why Islam will always win against such sentiments because there is no truth in nationalism, and this is why I also say that if Afghanistan and Pakistan are going to one day unite it shouldn't be because we share a common history or are a common people, but because we are Muslims. This why I said in the beginning that the major stake holders of KPK are the Pashtun, and so long as they remain loyal to Islam then they are not going to betray Pakistan for the sake of nationalism.
Pakistan is actually made for Muslims so it inherently never was created with nationalist thought in mind. So if Afghan nation wants to merge we can still call it pakistan instead of sindhistan, baluchistan, pashtunistan or afghanistan. It will be a more simpler step of including pashtun areas from afghan side in Pakistan because other nationalities may not be as forthcoming to the idea and merge would never realize. Imagine the power of pakhtuns in pakistan if that happens (if at all you subscribe to the ideals of pashtun as a national identity).
brother you have included some folks in the same breath that actually does not belong together. When talking about likes of Chaudhary Rehmat Ali, Allama Iqbal, Israr ahmad, there is no need to include folks like shahid massed and even Mr Orya maqbool. I don't doubt the latters intent, but they are definitely not the thinkers of same level as the one like Allama, Chaudhary sahib and Dr. Israr.
The problem with that my brother is that I believe it will cause resentments, Afghans today identify themselves as Afghans while Pakistanis identify themselves as Pakistani, if Afghanistan merged with Pakistan instead of both countries unifying as it would be a mutual relationship then the foundations on which Pakistan was built would still remain and the forces of secularism and democracy will still be there to haunt future generations. The reason why I would like to see a clean new slate is that I would like to see the foundations of this new nation based solely on Sharia and Islam, not on secularism or democracy, that way future generations wouldn't have to deal with these nuisances. And this is not a matter of Pashtun and other nationalities, I myself am part Tajik and part Pashto, but I identify as Muslim first and if the rest of Afghanistan followed Sharia and Islam then they too would be open to unification.