"The contest in Vietnam is part of a wider pattern of aggressive purpose.
Why are these realities our concern? Why are we in South Vietnam? We are there because we have a promise to keep. Since 1954 every American President has offered support to the people of South Vietnam. We have helped to build, and we have helped to defend. Thus, over many years, we have made a national pledge to help South Vietnam defend its independence. And I intend to keep our promise.
To dishonor that pledge, to abandon this small and brave nation to its enemy, and to the terror that must follow, would be an unforgivable wrong.
We are also there to strengthen world order. Around the globe, from Berlin to Thailand, are people whose well-being rests, in part, on the belief that they can count on us if they are attacked. To leave Vietnam to its fate would shake the confidence of all these people in the value of American commitment, the value of America's word. The result would be increased unrest and instability, and even wider war.
We are also there because there are great stakes in the balance. Let no one think for a moment that retreat from Vietnam would bring an end to conflict. The battle would be renewed in one country and then another. The central lesson of our time is that the appetite of aggression is never satisfied. To withdraw from one battlefield means only to prepare for the next. We must say in Southeast Asia, as we did in Europe, in the words of the Bible: "Hitherto shalt thou come, but no further.""
President Lyndon B. Johnson delivered this speech to the people of United States at John Hopkins University on April 7, 1965. The speech would be titled 'Peace without Conquest', and would explain and promote US involvement in Vietnam.