Gasiorowski further states "the major U.S. oil companies were not interested in Iran at this time. A glut existed in the world oil market. The U.S. majors had increased their production in Saudi Arabia and Kuwait in 1951 in order to make up for the loss of Iranian production; operating in Iran would force them to cut back production in these countries which would create tensions with Saudi and Kuwaiti leaders. Furthermore, if nationalist sentiments remained high in Iran, production there would be risky. U.S. oil companies had shown no interest in Iran in 1951 and 1952. By late 1952, the Truman administration had come to believe that participation by U.S. companies in the production of Iranian oil was essential to maintain stability in Iran and keep Iran out of Soviet hands. In order to gain the participation of the major U.S. oil companies, Truman offered to scale back a large anti-trust case then being brought against them. The Eisenhower administration shared Truman's views on the participation of U.S. companies in Iran and also agreed to scale back the anti-trust case. Thus, not only did U.S. majors not want to participate in Iran at this time, it took a major effort by U.S. policymakers to persuade them to become involved."