Bangladesh is not irrelevant at all.
The original map of Pakistan was almost 1.5 times of current size. We lost a lot. And no, Jinnah never said that Muslims of India should not come to Pakistan.
The biggest challenges in the foreseeable future are the viability of Afghanistan and Pakistan as functioning economies. And Bangladesh's response will be to remain uninvolved. They have shown the wisdom of trying to improve themselves without distractions.
The Maurya Empire of Pataliputra (Patna), Bihar, under the rule of Ashoka The Great, governed a territory much larger than that of the British Raj.
There won't be any confrontation, barring some non-State actors going their merry way. Afghanistan's problem for a while will remain preventing starvation and disease of its people.
In my opinion, Pakistan functions as a buffer, serving to shield India from the influx of Afghan refugees. Without this buffer, India would face significant challenges in managing such a large number of refugees. It's worth noting that India already accommodates around 40 million undocumented Bangladeshi Muslim refugees, in addition to millions of Rohingya Muslim refugees from Myanmar.
I believe that Afghanistan has the potential to stabilize and flourish, transitioning into a more liberal, democratic, and secular entity similar to Turkey during Mustafa Kemal Pasha's era. It's important to recall that Afghanistan was not originally founded on Islamic principles, which leaves room for its potential secular development. However, considering Pakistan's foundation rooted in Islam, it appears highly unlikely for Pakistan to move towards secularism. Instead, there is a greater chance for Pakistan to undergo further Islamization, paralleling Afghanistan's state in the 1990s.
