Iran had originally ordered the S-300-PMU1 in 2007. The $800 million contract was then cancelled by Russia in 2010. In 2011, Iran launched a $4 billion lawsuit against Russia over the cancellation.
Iran insists that Russia fulfill the original contract and deliver the S-300 as agreed. It will only withdraw the lawsuit when Russia agrees to honor the contract that was signed.
While Iran has yet to receive the S-300, it already has the Tor-M1 system. In 2005, 29 Tor-M1 systems were ordered for $700 million. All were delivered by 2007.
The Tor-M1 is a short-range, all-weather, surface-to-air missile air defense system that can engage aircraft, unmanned aerial vehicles, cruise missiles and other precision guided munitions.
The tracked Tor-M1 vehicle carries 8 vertically cold-launched 9M331 missiles. Each 9M331 has a:
- Length of 2900 mm
- Diameter of 235 mm
- Weight of 167 kg
- Warhead of 15 kg
- Speed of 850 m/s
- Range of 12000 m
- Ceiling of 6000 m
The latest version, the Tor-M1 features a number of improvements, including:
- new phased array radar
- improved missiles
- improved electronic counter measures
- improved infrared tracking system
- increase in the number of targets that can be engaged simultaneously