Truman Doctrine, Marshall Plan and divided Germany
America Steps In: the Truman Doctrine 1947
By early 1947, Britain told the United States it could no longer afford to support the Greek government, which was fighting a communist insurgency. President Harry S. Truman responded on 12 March 1947 with a speech to Congress that became known as the Truman Doctrine. He asked Congress for $400 million to aid Greece and Turkey, framing it as a choice between freedom and totalitarianism. This speech marked the formal beginning of containment as official US policy.
The Truman Doctrine was a significant break from America's traditional reluctance to commit to peacetime alliances. Some historians see it as a genuine defensive response to Soviet pressure in Eastern Europe; others, such as the revisionist historian William Appleman Williams, argue it reflected US economic interests and an aggressive projection of American power. Both readings help explain how the Cold War became a global confrontation rather than a purely European one.
On 12 March 1947 Truman asked Congress for $400 million to aid Greece and Turkey, declaring that the USA would support free peoples resisting communist takeover. This speech launched the policy of containment.
Rebuilding Europe: the Marshall Plan 1947
US Secretary of State George C. Marshall announced his European Recovery Programme on 5 June 1947 at Harvard University. Between 1948 and 1952 the USA provided approximately $13 billion in economic aid to sixteen Western European nations. The aim was to rebuild war-shattered economies, create stable markets for American goods, and remove the conditions — poverty and unemployment — in which communism might flourish.
The Soviet Union refused the offer and, through Cominform, pressured Poland and Czechoslovakia to reject it too. Stalin publicly branded Marshall Aid “dollar imperialism”, seeing it as a mechanism to extend US economic influence. From a Western perspective it was a generous reconstruction package; from the Soviet perspective it was a tool of ideological competition. Historians present both as legitimate readings of the same policy.
After 1945 Germany was divided into four occupation zones controlled by the USA, USSR, Britain and France. The Western powers merged their zones economically — the American and British zones became Bizonia in January 1947, with France joining later. When the Western powers introduced a new currency, the Deutschmark, in June 1948, Stalin saw it as a step towards a permanent Western German state hostile to the USSR.
The result was two separate German states. The Federal Republic of Germany (FRG) was established in May 1949; the German Democratic Republic (GDR) followed in October 1949. Germany’s division lasted four decades and became one of the defining symbols of the Cold War.
The Berlin Blockade and Airlift 1948–1949
Berlin lay inside the Soviet zone but was also divided into four sectors. On 24 June 1948, Stalin ordered all road, rail and canal routes from West Germany to West Berlin to be closed, cutting off two million people from food, fuel and other supplies. This was the Berlin Blockade. Stalin gambled that the West would rather abandon Berlin than risk war.
The Western response was the Berlin Airlift, organised by US General Lucius D. Clay and British Foreign Secretary Ernest Bevin. At its peak, Allied aircraft landed in West Berlin every 45 seconds, delivering coal, food and medicine. After 323 days Stalin lifted the blockade on 12 May 1949 — a humiliating climbdown that demonstrated Western resolve without triggering open conflict.
The Berlin Blockade lasted 323 days (24 June 1948 – 12 May 1949). The successful airlift showed the Western powers would defend Berlin without direct military confrontation, boosting Western credibility and hastening the formation of NATO in April 1949.
The Berlin crisis accelerated talks about collective Western defence. On 4 April 1949, twelve nations — including the USA, Britain, France, Canada and others — signed the North Atlantic Treaty, creating NATO. Article 5 committed every member to treat an armed attack on one as an attack on all. This was the first peacetime military alliance the United States had ever joined, marking a decisive break from isolationism.
The Soviet Union had already answered the Truman Doctrine and Marshall Aid: in September 1947 it set up Cominform to coordinate communist parties across Eastern Europe. After NATO’s founding, the USSR began to build its own defensive architecture, culminating in the Warsaw Pact of 1955. The formation of rival military blocs hardened the division of Europe into two competing spheres.