This is the Iranian government erected memorial to Jewish Iranian soldiers who were killed fighting in the Iranian Army in the Iran-Iraq War.

According to the latest data there are still about 8,500 Iranian Jews resident in the country and quite a few synagogues.

As a reminder, there are no Jewish "citizens" of Saudi Arabia and of course there are no synagogues there. pl

https://en.wikipedia.org/wiki/History_of_the_Jews_in_Iran#Islamic_Republic_(since_1979)

https://en.wikipedia.org/wiki/List_of_synagogues_in_Iran