Supreme Leader Ayatollah Ali Khamenei banned Iran's government on Friday from importing COVID-19 vaccines from the United States and Britain.
www.reuters.com
Mossad might be getting a period of block leave soon-ish...
From what I've read, the real issue is that American sanctions against Iran have made it impossible for them to get the cash to US or European suppliers to pay for vaccine. That includes buying through COVAX (vaccine buying plan run by the WHO). The US has nominally lifted sanctions on Iran transferring money to Swiss banks for the purposes of buying vaccine, but left other sanctions in place so the Iranians can't get enough foreign currency in the form of hard cash together from sources acceptable to the Americans to make that transfer. They had been hoping to use cash from gas sales to Iraq, but the Iraqis haven't been paying their bills on time so there's a snag there.
The Iranians will apparently be making their own vaccine, which is in trials now, and they have a deal with Cuba, who also have a vaccine candidate coming up soon. Both Iran and Cuba have made vaccines for a long time, for over a century in Iran's case. These will probably be fairly conventional vaccines.
They can also probably buy vaccine from India, who have a license for the Oxford vaccine. India are the world's biggest vaccine manufacturer and are expected to supply much of the COVID-19 demand from the third world, mainly using the Oxford vaccine.
I suspect the Iranian announcement is intended as a face saving gesture instead of admitting that the American sanctions are having an effect on something that is a national priority.