King believed that the Vietnam war has deeply affected the US policy in the US due to too much spending during the Vietnam war. There were projects that had been stopped or funds were cut down because the annual budget is allocated for the war. The Great Society policy was one of the projects that was deeply affected by the Vietnam War.
Step-by-step explanation:
The Vietnam War had influenced the foreign policy. Because of the US had difficulties in winning in North Vietnam, Soviet and Chinese. The US had tried to do something less confrontational ways in order to reduce opposition between the US and different communist state.