In the 1960s what realization begin to shape the debate over foreign-policy a the fact that communism spreading and threatening government stability be the fact that radio as long as were threatening governments in the Middle East see the fact that some anti-communist LAs were pressing are people or do you perfect the Khmer Rouge was conducting a genocide slaughter of the Cambodians

The correct answer is A. The fact that communism was spreading and threatening government stability began to shape the debate over foreign policy in the 1960s. This situation led to the development of the domino theory and the adoption of the Johnson Doctrine as the main foreign policy rule in the United States.

The doctrine meant that the United States of America appropriated the right to carry out armed intervention in the internal affairs of the states of the Western Hemisphere (and subsequently of any countries in the Asia-Pacific region) to protect the interests of its citizens. The doctrine was aimed at preventing the coming to power of communist or socialist parties (even if their coming was done in a democratic way and with the support of the majority of the population of a sovereign country).