The Cold War was the tension and struggle between the capitalist bloc dominated by the United States and the communist bloc dominated by the Soviet Union from 1946 to 1991, due to their ideological difference, mutual distrust and conflict of interest. The confrontation between the two superpowers, the United States and the Soviet Union, took several forms to extend their global influence, including the creation of opposing plans and organizations, the arms race, support for allies in proxy wars, espionage activities and disruption of communications. The apparent effect of their confrontation during the Cold War was provoking international conflict. However, the US-Soviet confrontation promoted international cooperation, especially between the two leaders and aligned countries in rebuilding their economy. The international conflicts resulting from the US-USSR clash will be discussed first and followed by the international cooperation promoted by the latter. To extend their influence, the United States and the Soviet Union were eager to find allies and therefore provided European countries with post-war financial aid. economic reconstruction. In 1947, the United States announced the Marshal Plan with a corresponding economic organization, the Organization for European Economic Cooperation (OEEC) to distribute aid provided to both Western and Eastern Europe. All European countries were invited while 16 countries actually joined. However, the Soviet Union introduced the Molotov Plan and established the Council for Mutual Economic Assistance (COMECON) to counter it. Some politicians have denounced the Marshall Plan as “dollar diplomacy” aimed at corrupting allies. The Soviet Union feared that the Marshall Plan would curb the expansion of its sphere of influence, ... middle of paper ...... after the Chinese Civil War. After the Korean War, the United States signed the Mutual Defense Treaty with South Korea in 1953. The Vietnam War prompted Southeast Asian countries to form ASEAN. The space age competition ended with cooperation in space technology. NATO and the Warsaw Pact met and created the OSCE. When there is a conflict, alliance is needed to face one's enemy. This means that the US-USSR clash would require the alliances of the two blocs. But if we want to resolve a conflict and ease tension, international cooperation is needed for dialogue and balance of power. This is the integration of Europe as the EU as a third power to counterbalance and maintain peace. Overall, the confrontation between the United States and the Soviet Union during the Cold War certainly provoked international conflicts, but at the same time promoted international cooperation..