A Complete Overview of the Cold War Era

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The start of the Cold War — US-Soviet tension right after WWII
The United States and the Soviet Union, who had together defeated Nazi Germany in World War II, began clashing almost immediately after the war ended over their opposing systems — capitalism and communism. This period, marked by fierce competition across politics, economics, and the military while avoiding direct armed conflict, is called the "Cold War."
The Iron Curtain and the Berlin Wall
In a 1946 speech, Winston Churchill described Eastern Europe under Soviet influence as an "Iron Curtain," symbolically signaling the division of Europe. In 1961, East Germany built the Berlin Wall to prevent escapes to West Berlin, and the wall remained the leading symbol of Cold War division until it fell in 1989.
The Korean War and the Vietnam War — the concept of proxy wars
During the Cold War, rather than confronting each other directly, the United States and the Soviet Union competed in the form of "proxy wars" — as in the Korean War (1950–1953) and the Vietnam War — in which each supported the free-world and communist camps, respectively, in third countries. These proxy wars also became the root cause of regional divisions and conflicts that continue to this day, such as the division of the Korean Peninsula.
The Cuban Missile Crisis (1962)
When the Soviet Union attempted to build nuclear missile bases in Cuba in 1962, the United States responded with a naval blockade, and this 13-day crisis, which brought the world to the brink of nuclear war, was dramatically resolved through negotiation. After this incident, the two superpowers began efforts to ease tensions, including installing a direct communication line (the hotline) to prevent an accidental nuclear war.
The space race
When the Soviet Union took the lead by launching Sputnik 1, the world's first artificial satellite, in 1957, the United States established NASA and accelerated its space program in response. When the US Apollo 11 mission succeeded in landing humans on the Moon for the first time in 1969, the space race became a leading stage for showcasing dominance within the Cold War order.
The collapse of the Soviet Union and the end of the Cold War
Through Gorbachev's reform and openness policies after taking power in 1985, the successive collapse of communist regimes in Eastern Europe, the fall of the Berlin Wall in 1989, and the formal dissolution of the Soviet Union in 1991, the Cold War, which had lasted nearly half a century, came to a close.

Why it was called a "war without gunfire"

The Cold War was a roughly half-century-long confrontation in which the two superpowers, the United States and the Soviet Union, never directly clashed militarily but competed fiercely across politics, economics, the military, and science. During this period, many regions of the world were divided into, and affected by, the free-world and communist camps.

Where did the Cold War begin?

The roots of the Cold War trace back to a clash of interests among the victorious powers immediately after World War II's major battles concluded. It's worth exploring together how the vacuum left in the international order by the war led to this new confrontation.

Frequently Asked Questions

Exactly when did the Cold War start and end?

The Cold War is generally considered to have lasted from around 1945, when World War II ended, until 1991, when the Soviet Union collapsed.

Was the Korean War also part of the Cold War?

Yes, the Korean War is classified as a representative Cold War-era proxy war in which the free-world and communist camps directly clashed on the Korean Peninsula.