Iran building missile system more advanced than S-300

After Russia refused to deliver S-300 missile system to Iran experts at home have started work on producing a missile system which will be much more advanced than the S-300 system, the commander of the Khatam-ol-Anbia Anti-Aircraft Base announced on Monday.
The missile system, called Bavar 373, will in fact be a replacement for S-300, Brigadier General Farzad Esmaeili told a press conference.

Esmaeili also said air defense maneuvers will start either in the next calendar month of Mehr (September 22-October 21) or Aban (October 22-Novemebr 20).