In 1990, the Middle Eastern country of Iraq invaded its smaller neighbor, Kuwait. In response, an international coalition of forces led by the United States attacked Iraq. The resulting Gulf War lasted several months and ended with the defeat of Iraq, which withdrew its forces from Kuwait. A historian interviews two people who fought during a certain battle during the Gulf War. One person says U. S. forces fired first; the other person says Iraqi forces fired first. To try to learn what really happened, the historian should: