Explained: UN to vote on extending arms embargo on Iran. What's at stake?

The United Nations Security Council imposed an arms embargo on Iran in 2007 which is due to expire in mid-October

The UN Security Council is preparing to vote this week on a US proposal to extend an arms embargo on Iran, a move that some diplomats say is bound to fail and put an already fragile nuclear deal between Tehran and world powers further at risk.
 

WHY IS THE ARMS EMBARGO ON IRAN EXPIRING?

The United Nations Security Council imposed an arms embargo on Iran in 2007.
 

The embargo is due to expire in mid-October, as agreed under the 2015 nuclear deal among Iran, Russia, China, Germany, Britain, France and the United States that prevents Tehran from developing