Exactly how somebody from the Western world could obtain such chocolates is unclear, since the United States and much of the Western world has had sanctions against Iran since the 1979 Iranian Revolution, partially due to their support for radical Islamists outside of the country such as Hezbollah. Considering that the expiration date was in 1992, they were either produced in Iran, during a period of attempted economic reforms that pre-dated the better known reform movement of 1997-2005, or they could've been produced by Iranian exiles. It is also possible they could've been smuggled.