Iranian Army has developed its own version of Russian S-300 missile that will test soon, the official IRNA news agency said, just two months after Moscow decided to cancel the delivery to the Islamic Republic of sophisticated defense system to comply with sanctions imposed on Tehran by the UN. The Iranian version of S-300 missile is still being assembled, but will be tested soon, said Brigadier General Mohammad Hassan today Mansourian, one of the commanders of Revolutionary Guards, the elite units of the Iranian army.