We dont really need billions of dollars in aid when we can easily earn or save loosing billions of dollars in WOT. See by yourself.
Karachi-to-Torkham Toll Charges:
Super Highway
4/5/6 axle trucks 155 Rs.
National Highway
4/5/6 axle trucks 155 Rs.
Motorways
4/5/6 axle trucks 580 Rs. (Islamabad to Peshawar)
Kohat Tunnel
4/5/6 axle trucks 275 Rs.
Toll Rates
Now calculate the toll of Super Highway + National Highway (5 toll points roughly) + Motorway + Kohat Tunnel, it becomes 1780 Rs./truck
.so, 300 containers/day (lowest no.) mean 535500 Rs. ($6223/day or $2.240280 million/year)
Add the cost of National Highway Authoritys project with World Bank by the name of Pakistan Highway Rehabilitation Project (PHRP) due to road damage caused by these heavy trucks decade-long travel
.$282 will provide World Bank (keep this in mind that the amount is payable in return with interest)
..add octroi tax, usage fees/maintenance fees that we are not charging them as of yet, Rs 2.082 trillion loss in WOT in the form of exports, foreign investment, industrial output and tax collection etc. and minus all these figures from what we are gaining as aid and see by yourself is it profitable or not.
About diplomacy leverage
..well what fruitful benefits we have gained as of yet, I dont know.