What 3 key events in Asia led to the increase in fear of communism back home

Key events that increased the fear of communism back home were:

a. The attack of South Korea by communist forces of the north supported by Soviet union and later china.

b. the attack of south Vietnam by communist forces led by North vietnam, soviet union and vietcong, and the subsequent defeat of american and south Vietnam forces.

c. The attack of Afghanistan in 1979 by the Soviet union forces.