[impossiblefork]

Yes, but I think they can basically still do it. If they hadn't been buying F-35s they'd presumably have pushed their stealth fighter projects to be finished by now, and what more is really required?

I think these trade routes etc. will stop mattering rather soon. Batteries are coming and once that's here the oil trade's gone, and then you have no need to export things to get something to trade for it, so in a decade or so none of this will matter.

International trade will go from being mandatory to optional, and thus become much less important.