Caspian Guard gives member states access to US training and tactical knowledge and the assurance of friendly relations with the world's sole superpower in exchange for assistance in dealing with some of the axis of evil's charter members.The article has some links to maps of our new Guard allies. They include Kazakhstan and Azerbaijan. Or you can go to the CIA Factbook site and look up the countries there to see how they relate spatially to Iran.
Or get an atlas. I would recommend, with all that's happening in the world today, that everyone get an atlas and open it occasionally.