destruction. The Sejil is a two-stage, solid-propellant, surface-to-surface missile (SSM) produced by Iran with a reported 1,930 km (1,200 mi) range. A successful test launch took place on 12 November 2008. According to Jane's Information Group, details of the design other than the number of stages and that it uses solid fuel have not been released. Uzi Ruben, former director of Israel's Ballistic Missile Defense Organization, indicated that, "Unlike other Iranian missiles, the Sajil bears no resemblance to any North Korean, Russian, Chinese or Pakistani (missile technology). It demonstrates a significant leap in Iran's missile capabilities." Ruben went on to state that the Sejil-1 " ... places Iran in the realm of multiple-stage missiles, which means that they are on the way to having intercontinental ballistic missile (ICBM) capabilities ..." As a weapon, the Sejil-1 presents much more challenge to Iran's potential enemies, as solid-fuel missiles can be launched with much less notice than liquid-fueled missiles, making them more difficult to strike prior to launch. Sejil-2 is an upgraded version of the Sejil. The Sejil-2 two-stage solid-fuel missile has a 2,000 km range and was first test fired on 20 May 2009. The Sejil-2 surface-to-surface medium-range ballistic missile (MRBM) was first tested eight months prior to the actual test launch, which took place in the central Iranian province of Semnan. Improvements include better navigation system, better targeting system, more payload, longer range, faster lift-off, longer storage time, quicker launch, and lower detection possibility. Aircraft Any aircraft could potentially be used to host some form of WMD distribution system. Iran has a varied air force with aircraft purchased from many countries, including the United States. Due to sanctions, the Iranian government has encouraged the domestic production of aircraft and, since 2002, has built its own transport aircraft, fighters, and gunship helicopters. See also AMAD Project Joint Comprehensive Plan of Action United Nations Security Council Resolution 1747 Nuclear program of Iran Operation Merlin Green Salt Project Iranian Space Agency References External links Annotated Google map of Iranian nuclear sites Report by the Director General of IAEA: Implementation of the NPT Safeguards Agreement and relevant provisions of Security Council resolutions 1737 (2006) and 1747 (2007) in the Islamic Republic of Iran, 22 February 2008, GOV/2008/4. Analysis Towards Transatlantic Cooperation in Meeting the Iranian Nuclear Challenge – analysis by George Perkovich, IFRI Proliferation Papers n°14, 2005 Iran's Nuclear History, Prof. Mohammad Sahimi, Chairman of