The elimination of zeros: Central bank unveils new 50 Tomani bill (equivalent of 50,000 Toman or 500,000 Rial of today)
As I wrote many times in this thread, Rial is essentially a dead currency, about to be pathetically replaced by the new "Toman". The new "Toman" is not the "Toman" you know. It's actually 0.001*Toman of today. This means 100,000 (100K) Toman will be 100 Toman.
This method has happened many times in history in countries experiencing high inflation and with very few exceptions, it brings further devaluation and often hyper-inflation.
It's not set in stone yet, but it's gonna happen one way or another. Again, none of this has anything to do with sanctions.