It started in Russia which turned into the Soviet Union and at its largest point included the following countries:
Poland, Mongolia, Armenia, Azerbaijan, Latvia, Tajikistan, Ukraine, Uzebekistan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Lithuania, Moldova, Turkmenistan
Then there was the eastern block countries and Baltic nations including:
Bulgaria, Czech Republic, East Germany, Hungary, Poland, Romania, Slovakia, Albania, Bosnia and Herzegovina, Croatia, Macedonia, Montenegro, Serbia and Slovenia
And other countries such as Cambodia, Vietnam, China, Cuba and North Korea.
There were many countries which were not communist, but had communist leanings such as Angola, Mozambique, Yemen, Chile etc.
The Soviet Union!
The fight against the spread of Communism.
Western Bloc
Restrict the spread of communism in foreign countries
Because communism had spread across the European countries at the time.
The US. adopted a policy of containment towards the spread of Communism. Which in summary means that the US. exercised a policy to stop the Communism movement from spreading into new countries and to contain it where it was at the time.
To stop the spread of Communism
Some might be worried that communism is making a comeback. Some countries might also take precautions to try and keep it from spreading to other countries. Duhh
One way that the Truman Doctrine was used to stop the spread of communism is by his policy called containment. This was a way to pour money and supplies into war-torn countries, keep them afloat and stop the spread of communism. Another example is the Marshal Plan that also gave money to European countries in return for support.
To prevent the spread of communism.
To spread communism outside of Russian soil.
The United States fought both Cuba and Russia to fight the spread of communism. One effect of this was the Cold War which lasted through much of the 1950s and 1060s.