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The Cold War, 1948-1960 - AQAThe Arms Race and the Space Race

After 1948 the Cold War entered a new phase. Moving beyond the borders of Europe, it spread to Asia and even into Space! At the same time the USA and the USSR greatly increased their nuclear arsenals.

Part of HistoryThe Cold War and Vietnam

The Arms Race and the Space Race

Headshot portrait of Dwight D. Eisenhower
Figure caption,
President Dwight D. Eisenhower

Ever since the USA had dropped the on Hiroshima in 1945, the had been determined to develop its own nuclear weapons. It finally succeeded in 1949 and this began a nuclear arms race, with both sides racing to develop more and bigger bombs.

However, it became clear that the did not intend to use these new weapons hastily. This was demonstrated during the Korean War when President Truman sacked General MacArthur for arguing in favour of using nuclear weapons to end that war.

Nonetheless, a new idea developed: that of . This suggested that the very fact of a country possessing nuclear weapons would prevent another country from threatening its interests, because they wouldn鈥檛 want to provoke a nuclear attack. In order to maintain this upper hand, the superpowers had to continue to build up their stockpiles of ever more powerful nuclear weapons so that they would have the power to massively retaliate against any such attack.

As the Cold War developed, the theory of (MAD) took shape. This said that the existence of such massive nuclear weapons meant that open war between the superpowers, in which nuclear weapons were used, would end life on earth. This was the ultimate deterrent, and both sides continued to build up their arsenals of nuclear weapons to gain this advantage.

There was pressure on the US government from the armed forces and arms manufacturers to increase military spending throughout the 1950s. As President Eisenhower was coming to the end of his term of office, he warned the American public that too much power lay in the hands of this . As an army general, he felt able to resist their pressure, but he was concerned that a future president wouldn鈥檛 be able to resist their arguments for limitless military spending.

This nuclear arms race was also matched by similar competition over space and the race to the moon.

DateMajor Events of the Arms Race
1945USA drops atomic bombs on the Japanese cities of Hiroshima and Nagasaki
1949The USSR鈥檚 first successful atomic bomb test ends American nuclear monopoly
1950The UK carries out nuclear tests in Western Australia
1952The USA successfully tests the first Hydrogen bomb, 2500 times more powerful than the atomic bomb
1953The USSR tests its own Hydrogen bomb.
1955The USA publishes its Doctrine of Massive Retaliation stating that any attack on the USA or its allies would be met with incredible destructive force
1957In order to launch the satellite Sputnik I, the USSR had developed a rocket. The same rocket was capable of carrying an atomic warhead for thousands of miles. This meant the USSR had created the first Intercontinental Ballistic Missile (ICBM).
1958The USA tests its own ICBMs
1959The USA deploys Polaris submarines capable of launching nuclear missiles close to the shore of the USSR
1961The USSR detonates the Tsar Bomba, a nuclear bomb which produced the largest ever man-made explosion
1962The Cuban Missile Crisis 鈥 for 13 days the world stood on the edge of nuclear war
1968The USSR develops an Anti-Ballistic Missile system to shoot down in-bound US missiles
1968The USA develops MIRV technology - allowing missile warheads to hit multiple targets from one missile
Date1945
Major Events of the Arms RaceUSA drops atomic bombs on the Japanese cities of Hiroshima and Nagasaki
Date1949
Major Events of the Arms RaceThe USSR鈥檚 first successful atomic bomb test ends American nuclear monopoly
Date1950
Major Events of the Arms RaceThe UK carries out nuclear tests in Western Australia
Date1952
Major Events of the Arms RaceThe USA successfully tests the first Hydrogen bomb, 2500 times more powerful than the atomic bomb
Date1953
Major Events of the Arms RaceThe USSR tests its own Hydrogen bomb.
Date1955
Major Events of the Arms RaceThe USA publishes its Doctrine of Massive Retaliation stating that any attack on the USA or its allies would be met with incredible destructive force
Date1957
Major Events of the Arms RaceIn order to launch the satellite Sputnik I, the USSR had developed a rocket. The same rocket was capable of carrying an atomic warhead for thousands of miles. This meant the USSR had created the first Intercontinental Ballistic Missile (ICBM).
Date1958
Major Events of the Arms RaceThe USA tests its own ICBMs
Date1959
Major Events of the Arms RaceThe USA deploys Polaris submarines capable of launching nuclear missiles close to the shore of the USSR
Date1961
Major Events of the Arms RaceThe USSR detonates the Tsar Bomba, a nuclear bomb which produced the largest ever man-made explosion
Date1962
Major Events of the Arms RaceThe Cuban Missile Crisis 鈥 for 13 days the world stood on the edge of nuclear war
Date1968
Major Events of the Arms RaceThe USSR develops an Anti-Ballistic Missile system to shoot down in-bound US missiles
Date1968
Major Events of the Arms RaceThe USA develops MIRV technology - allowing missile warheads to hit multiple targets from one missile
DateMajor events of the Space Race
1957The USSR launches Sputnik 1 - the world鈥檚 first telecommunications satellite. Sputnik 2 was launched later that year and carried a small dog named Laika 鈥 the first living animal to go into orbit.
1959The USSR launches Luna 1 - the first man-made object to orbit the sun. The USA then sent Pioneer 4 to do a fly-past of the Moon, prompting the Soviets to launch Luna 2 at the moon.
1960The USA launches Discovery XIV - the first satellite equipped with a spy camera.
1961The USSR puts the first man, Yuri Gagarin, into space. The USA responds by launching its own Apollo missions, and Alan Shepard becomes the first American in space. President John F Kennedy challenges America to put a man on the moon by the end of the decade.
1969The American astronauts, Neil Armstrong and Buzz Aldrin, become the first men to walk on the moon.
Date1957
Major events of the Space RaceThe USSR launches Sputnik 1 - the world鈥檚 first telecommunications satellite. Sputnik 2 was launched later that year and carried a small dog named Laika 鈥 the first living animal to go into orbit.
Date1959
Major events of the Space RaceThe USSR launches Luna 1 - the first man-made object to orbit the sun. The USA then sent Pioneer 4 to do a fly-past of the Moon, prompting the Soviets to launch Luna 2 at the moon.
Date1960
Major events of the Space RaceThe USA launches Discovery XIV - the first satellite equipped with a spy camera.
Date1961
Major events of the Space RaceThe USSR puts the first man, Yuri Gagarin, into space. The USA responds by launching its own Apollo missions, and Alan Shepard becomes the first American in space. President John F Kennedy challenges America to put a man on the moon by the end of the decade.
Date1969
Major events of the Space RaceThe American astronauts, Neil Armstrong and Buzz Aldrin, become the first men to walk on the moon.
Image of astronaut Edwin (Buzz) E Aldrin standing next to an American flag on the moon.
Image caption,
Astronaut Edwin (Buzz) E Aldrin standing next to an American flag on the moon

Revision tip

Look at the table below so you understand when the leaders of each superpower changed:

A timeline showing the leaders from the United States of America, on the left, and Soviet Union leaders, on the right