Persian Gulf War: A series of UN Security Council resolutions and Arab League resolutions were passed regarding the invasion of Kuwait by Saddam Hussein's Iraq. One of the most important was Resolution 678, passed on 29 November 1990, which gave Iraq a withdrawal deadline until 15 January 1991, and authorized “all necessary means to uphold and implement Resolution 660,” and a diplomatic formulation authorizing the use of force if Iraq failed to comply.

The United States assembled a coalition of forces to join it in opposing Iraq's aggression, consisting of forces from 34 countries: Argentina, Australia, Bahrain, Bangladesh, Belgium, Canada, Denmark, Egypt, France, Greece, Italy, Kuwait, Morocco, Netherlands, New Zealand, Niger, Norway, Oman, Pakistan, Portugal, Qatar, South Korea, Saudi Arabia, Senegal, Sierra Leone, Singapore, Spain, Syria, the United Arab Emirates, the United Kingdom and the United States itself.

Although they did not contribute any forces, Japan and Germany made financial contributions totaling $10 billion and $6.6 billion respectively. U.S. troops represented 73% of the coalition’s 956,600 troops in Iraq.

Many of the coalition forces were reluctant to join. Some felt that the war was an internal Arab affair, or did not want to increase U.S. influence in the Middle East. In the end, however, many nations were persuaded by Iraq’s belligerence towards other Arab states, offers of economic aid or debt forgiveness, and threats to withhold aid.