The Iron Curtain: Truman Doctrine and Marshall Plan

As the Red Army pushed the Nazis back across Europe in 1944–45, it occupied much of Eastern Europe. Rather than withdraw, Stalin kept Soviet influence in these countries and helped communist governments take power in them.

Stalin's motive was security. The USSR had been invaded through Eastern Europe twice in living memory (in the First World War and by Nazi Germany in 1941), losing millions of people. He wanted a buffer zone of friendly, communist states between the USSR and the West to protect against future attack.

By 1948, pro-Soviet communist governments controlled:

• Poland
• Hungary
• Romania
• Bulgaria
• Czechoslovakia
• East Germany (the Soviet zone)

Free elections promised at Yalta either did not happen or were rigged. To the West, this looked like broken promises and aggressive expansion rather than defensive security. Only Yugoslavia, under its own communist leader Tito, stayed independent of Stalin's direct control.

In March 1946, the former British Prime Minister Winston Churchill gave a famous speech at Fulton, Missouri, in the USA. He declared that an "iron curtain" had descended across Europe, dividing the free West from the communist East.

The phrase captured how Europe had split into two hostile halves:

• East — communist states under Soviet control, cut off from the West.
• West — capitalist, democratic states allied with the USA.

"From Stettin in the Baltic to Trieste in the Adriatic, an iron curtain has descended across the Continent." — Winston Churchill, Fulton, March 1946

The speech was not official government policy, but it summed up Western fears and hardened attitudes. Stalin condemned it as warmongering. The idea of a divided continent shaped how both sides saw the developing conflict for the next four decades.

The turning point in US policy came in March 1947. When Britain announced it could no longer afford to support Greece and Turkey against communist pressure, President Truman stepped in.

In a speech to Congress, Truman promised that the USA would support free peoples resisting communism. This became known as the Truman Doctrine, and its underlying policy was containment — stopping communism from spreading any further, without directly attacking where it already existed.

• The USA gave around $400 million in aid to Greece and Turkey.
• Truman argued that if one country fell to communism, neighbouring countries might follow — an early version of what became the Domino Theory.
• It marked the end of American isolationism: the USA was now committed to opposing communism worldwide.

The Truman Doctrine set the direction of US foreign policy for the whole Cold War. Its practical partner was the economic programme announced a few months later, the Marshall Plan.

Containment needed more than military aid. Truman and his Secretary of State, George Marshall, believed that poverty and hardship made communism attractive — so rebuilding Western Europe's economy would strengthen it against communism.

The Marshall Plan (announced June 1947, passed by Congress in 1948) offered around $13 billion in US aid to help rebuild European economies after the war.

Aim of the Marshall Plan	How it worked
Rebuild war-damaged economies	Grants and loans for industry, food, machinery and fuel
Make communism less appealing	Prosperous people were thought less likely to turn communist
Create markets for US goods	Recovering economies could buy American exports
Strengthen the Western bloc	Sixteen Western European countries accepted aid

Truman said the Truman Doctrine and Marshall Plan were "two halves of the same walnut": one committed the USA to containment, the other paid for it. To Stalin, however, the Plan looked like a weapon aimed at the East.

Stalin rejected the Marshall Plan as "dollar imperialism" — an attempt to spread American power and pull Eastern Europe into the US sphere by making it dependent on US money. He forbade the countries under Soviet control from accepting Marshall Aid.

Instead, Stalin tightened Soviet control of the East through two organisations:

Organisation	Year	Purpose
Cominform (Communist Information Bureau)	1947	Coordinated and controlled communist parties across Europe, keeping them loyal to Moscow
Comecon (Council for Mutual Economic Assistance)	1949	Linked the economies of Eastern Europe to the USSR, acting as a communist alternative to the Marshall Plan

Cominform was also used to expel Yugoslavia in 1948 when Tito refused to take orders from Stalin. Together, these responses showed that the USSR was building its own bloc to mirror and resist the American one.

By 1949 the "evolution of East–West rivalry" was complete: Europe had hardened into two opposed blocs, each with its own leader, ideology and economic system.

• The West — capitalist and democratic, led by the USA, supported by the Truman Doctrine and Marshall Plan.
• The East — communist and one-party, led by the USSR, tied together by Cominform and Comecon.

Each US action provoked a Soviet reaction, and each Soviet action confirmed Western fears. This cycle of action and reaction is a key idea for the exam: containment led to Cominform and Comecon, which deepened the divide, which justified further containment. The most dramatic flashpoint of this divided Europe came over the city of Berlin.

1. Confusing the Truman Doctrine with the Marshall Plan

The Truman Doctrine is the policy of containing communism. The Marshall Plan is the economic aid used to carry it out. Answers that treat them as the same thing lose precision — explain how they connect but keep them distinct.

2. Getting the dates or figures wrong

The Truman Doctrine and Marshall Plan both belong to 1947 (the Plan passed Congress in 1948). Marshall Aid was around **$13billion\ast \ast .Donotconfusethiswiththeroughly$400 million given specifically to Greece and Turkey.

3. Saying the Iron Curtain was a real, physical wall

The Iron Curtain was an imaginary dividing line across Europe, not a physical barrier. Do not confuse it with the Berlin Wall, which was not built until 1961.

4. Ignoring Stalin's point of view

Strong answers explain why Stalin rejected Marshall Aid and set up Cominform and Comecon. Show the action-and-reaction relationship between US and Soviet policy rather than describing only the Western side.

5. Mixing up Cominform and Comecon

Cominform (1947) controlled communist parties politically. Comecon (1949) linked Eastern European economies. Keeping the two roles and dates apart shows precise knowledge.