Iraq was at war with Iran from 1980 to 1988. The building of this army was expensive and put Iraq in debt. Saddam Hussein(dictator of Iraq) blamed his economic troubles on Kuwait.
It is all of Kuwait´s fault!
Iraq invaded Kuwait on August 2nd 1990 with a large force. The main reason Iraq invaded Kuwait was for money and power. Iraq had gained control of most of Kuwait within 12 hours.
The United Nations tried to negotiate with Iraq to get them to leave Kuwait for several months. Saddam did not listen and on January 17, many attacked nations attacked Iraq. This attack is code named Operation Desert Storm