What factors leading to freedom from communism did dulles not foresee?

John Foster Dulles was an international lawyer and US Secretary of State and was known for his strong stance against communism all over the world.

The major factor was false instinct of threat.He concluded there was a threat where there was none. If we had removed the troops immediately at the end of World War I , the so called threat would have disappeared.

The US and Britain formed an alliance and attacked Russia towards the end of World War I .They thought the revolutionary Bolsheviks would be too disorganized to accomplish a successful military regime and Russia could be split between them.

i have to go with a for this one

answer; ( correlation );