The Azerbaijani Armed Forces () were re-established according to the Law of the Republic of Azerbaijan on the Armed Forces from 9 October 1991. The Azerbaijan Democratic Republic (ADR) had originally formed its own armed forces from 26 June 1918 but were dissolved after Azerbaijan was absorbed into the Soviet Union as the Azerbaijan Soviet Socialist Republic from 28 April 1920. After the Soviet Union dissolved in 1991–92, the armed forces were reformed based on Soviet bases and equipment left on Azerbaijani soil. The armed forces have three branches: the Azerbaijani Land Forces, the Azerbaijani Air and Air Defence Force, and the Azerbaijani Navy. Associated forces include the Azerbaijani National Guard, the Internal Troops of Azerbaijan, and the State Border Service, which can be involved in state defense under certain circumstances. According to the Azerbaijani media sources the military expenditures of Azerbaijan for 2009 were set at US$2.46 billion, however according to Stockholm International Peace Research Institute, only $1.473 billion was spent in that year. IISS also suggests that the defence budget in 2009 was $1.5 billion. The Ministry of Defence Industry of Azerbaijan supervises the design, manufacturing, regulation and maintenance of military equipment. In the future, Azerbaijan hopes to start building tanks, armored vehicles, military planes and military helicopters. Overview Since the fall of the Soviet Union, Azerbaijan has been trying to further develop its armed forces into a professional, well trained, and mobile military. Azerbaijan has been undergoing extensive modernization and capacity expanding programs, with the military budget increasing from around $300 million in 2005 to $2.46 billion in 2009. The total armed forces number 56,840 men in the land forces, 7,900 men in the air force and air defence force, and 2,200 men in the navy. There are also 19,500 personnel in the National Guard, State Border Service, and Internal Troops. In addition, there are 300,000 former service personnel who have had military service in the last 15 years. The military hardware of Azerbaijan consists of 220 main battle tanks, an additional 162 T-80's were acquired between 2005 and 2010, 595 armored combat vehicles and 270 artillery systems. The air force has about 106 aircraft and 35 helicopters. Azerbaijan has acceded to the Nuclear Non-Proliferation Treaty as a non-nuclear weapons state. Azerbaijan participates in NATO's Partnership for Peace. Azerbaijan joined the multi-national force in 2003. It sent 150 troops to Iraq, and later troops to Kosovo. Azerbaijani