Henry Kissinger was the American who negotiated the cease-fire with North Vietnam, essentially ending the United States involvement in the conflict between the North and South Vietnam. The correct option among all the options given in the question is option "c". He was also the United States Secretary of State during the time in which Richard Nixon and Gerald Ford were the presidents.
Answer:
Correct answer is by sending Soviet troops to Afghanistan.
Explanation:
Brezhnev doctrine was focused on the reaction of Soviet troops in the areas where the Socialism was endangered.
That is why the last option is correct as Soviets reacted with military assistance in Afghanistan.
All other options are not correct as they are showing the readiness of Soviet Union to lower the tension in certain period of crisis.
Washington recognizes that it is natural for people to organize and operate within groups such as political parties, but he also argues that every government has recognized political parties as an enemy and has sought to repress them because of their tendency to seek more power than other groups