Which sentence in this excerpt from President Richard Nixon's speech "The Great Silent Majority" contains the thesis statement? P:

Let us all understand that the question before us is not whether some Americans are for peace and some Americans are against peace. The question at issue is not whether Johnson's war becomes Nixon's war. The great question is: How can we win America’s peace? Well, let us turn now to the fundamental issue: Why and how did the United States become involved in Vietnam in the first place? Fifteen years ago North Vietnam, with the logistical support of Communist China and the Soviet Union, launched a campaign to impose a Communist government on South Vietnam by instigating and supporting a revolution. In response to the request of the Government of South Vietnam, President Eisenhower sent economic aid and military equipment to assist the people of South Vietnam in their efforts to prevent a Communist takeover. Seven years ago, President Kennedy sent 16,000 military personnel to Vietnam as combat advisers. Four years ago, President Johnson sent American combat forces to South Vietnam.