IMMEDIATELY after assuming office, I requested the Secretary of Defense to review the program initiated by the last administration to deploy the Sentinel Ballistic Missile Defense System.
The Department of Defense presented a full statement of the alternatives at the last two meetings of the National Security Council. These alternatives were reviewed there in the light of the security requirements of the United States and of their probable impact on East-West relations, with particular reference to the prospects for strategic arms negotiations.
After carefully considering the alternatives, I have reached the following conclusions: (1) the concept on which the Sentinel program of the previous administration was based should be substantially modified, (2) the safety of our country requires that we should proceed now with the development and construction of the new system in a carefully phased program, (3) this program will be reviewed annually from the point of view of (a) technical developments, (b) the threat, (c) the diplomatic context including any talks on arms limitation.
The modified system has been designed so that its defensive intent is unmistakable. It will be implemented not according to some fixed, theoretical schedule, but in a manner clearly related to our periodic analysis of the threat. The first deployment covers two missile sites; the first of these will not be completed before 1973. Any further delay would set this date back by at least 2 additional years. The program for fiscal year 1970 is the minimum necessary to maintain the security of our Nation.
This measured deployment is designed to fulfill three objectives:
1. Protection of our land-based retaliatory forces against a direct attack by the Soviet Union.
2. Defense of the American people against the kind of nuclear attack which Communist China is likely to be able to mount within the decade.
3. Protection against the possibility of accidental attacks from any source.
In the review leading up to this decision, we considered three possible options in addition to this program: a deployment which would attempt to defend U.S. cities against an attack by the Soviet Union; a continuation of the Sentinel program approved by the previous administration; and indefinite postponement of deployment while continuing research and development.
I rejected these options for the following reasons:
Although every instinct motivates me to provide the American people with complete protection against a major nuclear attack, it is not now within our power to do so. The heaviest defense system we considered, one designed to protect our major cities, still could not prevent a catastrophic level of U.S. fatalities from a deliberate all-out Soviet attack. And it might look to an opponent like the prelude to an offensive strategy threatening the Soviet deterrent.
The Sentinel system approved by the previous administration provided more capabilities for the defense of cities than the program I am recommending, but it did not provide protection against some threats to our retaliatory forces which have developed subsequently. Also, the Sentinel system had the disadvantage that it could be misinterpreted as the first step toward the construction of a heavy system.
Giving up all construction of missile defense poses too many risks. Research and development does not supply the answer to many technical issues that only operational experience can provide. The Soviet Union has engaged in a buildup of its strategic forces larger than was envisaged in 1967 when the decision to deploy Sentinel was made. The following is illustrative of recent Soviet activity:
1. The Soviets have already deployed an ABM system which protects to some degree a wide area centered around Moscow. We will not have a comparable capability for over 4 years. We believe the Soviet Union is continuing their ABM development, directed either toward improving this initial system, or more likely, making substantially better second generation ABM components.
2. The Soviet Union is continuing the deployment of very large missiles with warheads capable of destroying our hardened Minuteman forces.
3. The Soviet Union has also been substantially increasing the size of their submarine-launched ballistic missile force.
4. The Soviets appear to be developing a semi-orbital nuclear weapon system.
In addition to these developments, the Chinese threat against our population, as well as the danger of an accidental attack, cannot be ignored. By approving this system, it is possible to reduce U.S. fatalities to a minimal level in the event of a Chinese nuclear attack in the 1970's, or in an accidental attack from any source. No President with the responsibility for the lives and security of the American people could fail to provide this protection.
The gravest responsibility which I bear as President of the United States is for the security of the Nation. Our nuclear forces defend not only ourselves but our allies as well. The imperative that our nuclear deterrent remain secure beyond any possible doubt requires that the United States must take steps now to insure that our strategic retaliatory forces will not become vulnerable to a Soviet attack.
Modern technology provides several choices in seeking to insure the survival of our retaliatory forces. First, we could increase the number of sea- and land-based missiles and bombers. I have ruled out this course because it provides only marginal improvement of our deterrent, while it could be misinterpreted by the Soviets as an attempt to threaten their deterrent. It would therefore stimulate an arms race.
A second option is to harden further our ballistic missile forces by putting them in more strongly reinforced underground silos. But our studies show that hardening by itself is not adequate protection against foreseeable advances in the accuracy of Soviet offensive forces.
The third option was to begin a measured construction on an active defense of our retaliatory forces.
I have chosen the third option.
The system will use components previously developed for the Sentinel system. However, the deployment will be changed to reflect the new concept. We will provide for local defense of selected Minuteman missile sites and an area defense designed to protect our bomber bases and our command and control authorities. In addition, this new system will provide a defense of the continental United States against an accidental attack and will provide substantial protection against the kind of attack which the Chinese Communists may be capable of launching throughout the 1970's. This deployment will not require us to place missile and radar sites close to our major cities.
The present estimate is that the total cost of installing this system will be $6-$7 billion. However, because of the deliberate pace of the deployment, budgetary requests for the coming year can be substantially less--by about one-half---than those asked for by the previous administration for the Sentinel system.
In making this decision, I have been mindful of my pledge to make every effort to move from an era of confrontation to an era of negotiation. The program I am recommending is based on a careful assessment of the developing Soviet and Chinese threats. I have directed the President's Foreign Intelligence Advisory Board--a nonpartisan group of distinguished private citizens--to make a yearly assessment of the threat which will supplement our regular intelligence assessment. Each phase of the deployment will be reviewed to insure that we are doing as much as necessary but no more than that required by the threat existing at that time. Moreover, we will take maximum advantage of the information gathered from the initial deployment in designing the later phases of the program.
Since our deployment is to be closely related to the threat, it is subject to modification as the threat changes, either through negotiations or through unilateral actions by the Soviet Union or Communist China.
The program is not provocative. The Soviet retaliatory capability is not affected by our decision. The capability for surprise attack against our strategic forces is reduced. In other words, our program provides an incentive for a responsible Soviet weapons policy and for the avoidance of spiraling U.S. and Soviet strategic arms budgets.
I have taken cognizance of the view that beginning construction of a U.S. ballistic missile defense would complicate an agreement on strategic arms with the Soviet Union.
I do not believe that the evidence of the recent past bears out this contention. The Soviet interest in strategic talks was not deterred by the decision of the previous administration to deploy the Sentinel ABM system--in fact, it was formally announced shortly afterwards. I believe that the modifications we have made in the previous program will give the Soviet Union even less reason to view our defense effort as an obstacle to talks. Moreover, I wish to emphasize that in any arms limitation talks with the Soviet Union, the United States will be fully prepared to discuss limitations on defensive as well as offensive weapons systems.
The question of ABM involves a complex combination of many factors:
--numerous, highly technical, often conflicting judgments;
--the costs;
--the relationship to prospects for reaching an agreement on limiting nuclear arms;
--the moral implications the deployment of a ballistic missile defense system has for many Americans;
--the impact of the decision on the security of the United States in this perilous age of nuclear arms.
I have weighed all these factors. I am deeply sympathetic to the concerns of private citizens and Members of Congress that we do only that which is necessary for national security. This is why I am recommending a minimum program essential for our security. It is my duty as President to make certain that we do no less.
Note: Appropriations for a modified antiballistic missile system were included in the 1970 Armed Forces appropriation authorization bill approved on November 19, 1969 (Public Law 91-121, 83 Stat. 204).
The text of a letter to the President, dated March 17, 1969, from Dr. Lee A. DuBridge, the President's Science Adviser, on the proposed antiballistic missile system, is printed in the Weekly Compilation of Presidential Documents (vol. 5, P. 430).
Richard Nixon, Statement on Deployment of the Antiballistic Missile System. Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/239603