What happened August 1990AD in Saudi Arabia

Out of fear the Iraqi Army could launch an invasion of Saudi Arabia, US President George H. W. Bush quickly announced that the US would launch a "wholly defensive" mission to prevent Iraq from invading Saudi Arabia, under the codename Operation Desert Shield. The operation began on 7 August 1990, when US troops were sent to Saudi Arabia, due also to the request of its monarch, King Fahd, who had earlier called for US military assistance.