Yes. You really think access those models will not be given for offensive operations in each country? Of course they will be.
Perhaps in the future this will change, but even if that is the case, that's still a win for the defenders. Having a time advantage, even for a few months, is still a win.
Edit: Actually, the CIA/FBI/NSA/Etc.. does probably have access and are probably trying to hack Iran and so forth, so my comment above is probably technically wrong in that respect.
I think it's not "blackhat" in that sense because it's officially sanctioned. Same goes for equivalent models overseas.
The only thing these embargos achieve is giving massive nations a huge advantage, but leaves the average country and person exposed.