A report on Soviet Union, Cold War and United Nations

The United Nations Security Council (UNSC) is one of the six principal organs of the United Nations (UN) and is charged with ensuring international peace and security, recommending the admission of new UN members to the General Assembly, and approving any changes to the UN Charter.

It held its first session on 17 January 1946 but was largely paralyzed in the following decades by the Cold War between the United States and the Soviet Union (and their allies).

However, the League lacked representation for colonial peoples (then half the world's population) and significant participation from several major powers, including the US, the USSR, Germany and Japan; it failed to act against the 1931 Japanese invasion of Manchuria, the Second Italo-Ethiopian War in 1935, the 1937 Japanese occupation of China, and Nazi expansions under Adolf Hitler that escalated into World War II.

The Yalta Conference (codenamed Argonaut), also known as the Crimea Conference, held 4–11 February 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union to discuss the postwar reorganization of Germany and Europe.

Intended mainly to discuss the re-establishment of the nations of war-torn Europe, within a few years, with the Cold War dividing the continent, the conference became a subject of intense controversy.

Roosevelt wanted Soviet support in the Pacific War against Japan, specifically for the planned invasion of Japan (Operation August Storm), as well as Soviet participation in the United Nations.

Its principal members by 1941 were the United Kingdom, United States, Soviet Union, and China.

After the war ended, the Allies, and the Declaration that bound them, would become the basis of the modern United Nations; one enduring legacy of the alliance is the permanent membership of the U.N. Security Council, which is made up exclusively of the principal Allied powers that won the war.

Despite the successful creation of the United Nations, the alliance of the Soviet Union with the United States and with the United Kingdom ultimately broke down and evolved into the Cold War, which took place over the following half-century.

Under the Molotov–Ribbentrop Pact of August 1939, Germany and the Soviet Union had partitioned Poland and marked out their "spheres of influence" across Finland, Estonia, Latvia, Lithuania and Romania.

The United Nations (UN) was established to foster international co-operation and prevent future conflicts, with the victorious great powers—China, France, the Soviet Union, the United Kingdom, and the United States—becoming the permanent members of its Security Council.

The Soviet Union and the United States emerged as rival superpowers, setting the stage for the nearly half-century-long Cold War.

The Spanish–American War and World War I established the U.S. as a world power, and the aftermath of World War II left the United States and the Soviet Union as the world's two superpowers.

During the Cold War, both countries engaged in a struggle for ideological dominance, but avoided direct military conflict.

It is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, NATO, and other international organizations.