In the 1970s, the United States pursued the so-called "two-pillar" policy, that is, fostering Saudi Arabia and Iran as partners of western countries and acting as two pillars for stabilizing the regional situation. But in the late 1970s, with the fall of the Pahlavi dynasty in Iran, one of the "double pillars" collapsed. Saudi Arabia, as another pillar, has been able to sustain itself despite ups and downs.

In 1970s, Western Europe and Japan embarked on the road of economic and even political competition with the United States. 1967, western European countries established "European unity". In the early 1970s, the European Union shouted the slogan "In a bipolar world, Europe should speak with one voice", and it is striving to improve its international, political and economic status. At the same time, 1972, Japanese Foreign Minister Masayoshi Ohira declared at a press conference: "The era of Japan following the footsteps of the United States is over." 1Premier Nakasone Yasuhiro, who came to power in 1982, publicly stated many times that Japan would seek to become a political power and actively strive for a permanent seat in the United Nations. Economically, the United States, Western Europe and Japan have three pillars. Politically, Western Europe and Japan actively shake off the shadow of American control, seek political autonomy and play a role in national politics. Of course, militarily, Western Europe and Japan still faithfully play the role of American allies. Western Europe followed the United States in NATO, and Japan became an important strategic partner of the United States after the mid-1970s.