In 1980, Iraq invaded Iran, precipitating an eight-year war. By the end of the 1980s, Iraq was bankrupt, having amassed enormous debts, and oil-rich neighboring Kuwait, which Iraq had long claimed was rightly part of greater Iraq, seemed like the perfect solution. Saddam Hussein's invasion in August 1990 pitted one of the largest Arab armies against the smallest and Kuwait fell in a few days. Upset at this turn of events and worried about Hussein's military power, Saudi Arabia began negotiations with the US, UK and France to create a coalition to oust Iraq from Kuwait. More than 30 countries joined the coalition force. Operation Desert Shield had begun.