Sukhoi SU-30
Iran unveils S-300 missile system parts at army parade
Iran used its annual Army Day parade on April 17 to showcase parts of a long-awaited air defence system ordered from Russia, a move likely to irk critics of the arms deal.
The S-300 system has been on order since 2007 but Russia postponed the sale three years later after the UN Security Council passed a resolution relating to Iran's nuclear programme.