I wonder if the PAF and PA could try leasing Bagram and Shindad, and the remnant hardware. Pakistan can pay the new gov't for the facilities and hardware until the new Afghan establishment wants to take ownership. But until that point, they'll get paid to allow their neighbour to use and maintain the assets.
It's important to spotlight the reference point here -- "why would a financial institution lend money?" Basically, a ban on interest wouldn't make sense for commercial lending, there's no incentive. So, the point Islam might be making is that when someone needs money, there shouldn't be a commercial incentive to help them -- you should help the person for literally God's sake. Islam also recommends forgiving the loan if the person can't pay it back -- there's emphasis on sadaqah and giving your dunya in return for your aakhirah.
However, for such a system to work, someone has to channel liquidity into the economic system. If the incentive isn't commercial, then it shifts to economic interests. Who's job is that? It'd be the state or government, which -- in modern times -- isn't unheard of, today's governments did it (some at 0% interest) to generate a stimulus effect.
This is the fundamental mistake which Muslims make today. Islam bans usury/interest, it does not ban trade and profit making. Here is an age old argument that is made in favor of interest. When you read it, you will think interest is logical and the world cannot work without it. Then I will present the Islamic system and you will realize that this is a deceit perpetrated by non-Muslims.
In a fishing village A wants to invent a new fishing net that will improve the amount of fish catch by 10%. But since he is working on his invention, he cannot go out to fish for himself. B comes to his help and offers to give him 2 fish every day. B is sacrificing his own needs, so he wants A to give him back 2 fish for every fish he receives from B. Also, since B cannot wait forever, he gives A a period of 1 year to finalize his net before he needs to start paying.
This is interest according to Islamic teachings because the same type of thing - fish - is being exchanged, and more fish is being given than received. Here is how the Islamic system works.
B invests in A's venture by giving him 2 fish every day for 1 year. In turn, he now becomes a 40% business partner with A. When A finishes his net and start selling it, B will receive 40% of the profit . But if A's project fails, then B's investment also fails. Islam forces B to share the risk in the business venture. This is in stark contrast to capitalism which requires the borrower to pay back the amount no matter what. If A's venture fails, he is liable to give back all the fish to B, but no more. This liability is only to the extent that A is in possession of fish himself, or the means to acquire fish. B cannot force A to sell everything. If A has only 1 fish that he needs for himself, B cannot take it away. But if A has two fish and he only needs one, then he has to pay back B with one fish and keep doing this until his debt is paid.
This is my understanding but please verify this from a valid religious scholar before propagating it further. The intention isn't to teach you Islamic finance, rather, the philosophy of Islamic finance and exactly how it differs from the capitalist system. As you can see, the Islamic system is fair whereas the capitalist system is extortionist.
To truly understand Islam's view on interest, this is an invaluable article: