The most symbolic measure is the return of the conventional arms embargo. It bans any sale or transfer of weapons to Iran. Other key steps include blocking missile-related technology, freezing assets of officials tied to the nuclear program, and imposing travel bans.

These sanctions were lifted in 2015 under the nuclear deal but are now back through the “snapback” mechanism after Iran broke its commitments.

In practice, Iran can no longer import weapons or export military gear. Financial transactions linked to nuclear or missile projects are also blocked. The goal is to slow Tehran’s nuclear and missile programs. Iran already holds over 400 kg of uranium enriched to 60%, close to weapons-grade.

This move caused the rial to hit a record low and led Iran to recall ambassadors from Europe, marking a major diplomatic escalation.