1980 – Iraq invades Iran
. The Iran–Iraq War began when Iraq invaded Iran via air and land on 22 September 1980. It followed a long history of border disputes, and was motivated by fears that the Iranian Revolution in 1979 would inspire insurgency among Iraq's long-suppressed Shia majority as well as Iraq's desire to replace Iran as the dominant Persian Gulf state. Although Iraq hoped to take advantage of Iran's revolutionary chaos and attacked without formal warning, they made only limited progress into Iran and were quickly repelled; Iran regained virtually all lost territory by June 1982. For the next six years, Iran was on the offensive. 95,000 Iranian child soldiers were made casualties during the Iran–Iraq War, mostly between the ages of 16-17, but a few even younger than that. The war cost both sides in lives and economic damage: half a million Iraqi and Iranian soldiers, with an equivalent number of civilians, are believed to have died, with many more injured; however, the war brought neither reparations nor changes in borders.