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This Agreement provides for a restriction of five years on strategic offensive missile launcher deployments pending negotiation of more complete limitations on strategic offensive arms. The main effects of the Interim Agreement will be that:

the aggregate number of fixed, land-based ICBM launchers and SLBM launchers will be limited;

starting construction of additional fixed, land-based ICBM launchers is prohibited.

the number of launchers for modern heavy ICBMs, such as the Soviet SS-9, will be limited to that number currently operational and under construction;

ceilings will be placed on the number of SLBM launchers and modern ballistic missile submarines operational on each side; and up to the agreed ceilings, deployment of additional SĹBM launchers above a specified number for each Party requires an offsetting reduction of ICBM launchers of older types or SLBM launchers on older ballistic missile submarines.

In the first paragraph of the preamble of the Agreement the Parties express the conviction that the ABM Treaty and the Interim Agreement will contribute to the creation of more favorable conditions for active negotiation on limiting strategic arms and will improve international relations. In the second paragraph the Parties acknowledge the relationship between strategic offensive and defensive arms, and in the third they acknowledge their obligations under Article VI of the NonProliferation Treaty to pursue disarmament negotiations.


Article I of the Interim Agreement prohibits starting construction of additional fixed land-based ICBM launchers. While the text of Article I prescribes July 1, 1972 as the freeze date, the United States and the Soviet Union understand that, pending ratification and acceptance of the agreements, neither will take any action that will be prohibited thereby, in the absence of notification by either signatory of its intention not to proceed with ratification or approval.

This construction freeze covers all fixed land-based ICBM launchers, both silo and soft-pad, but does not include test and training ICBM launchers or mobile land-based ICBM launchers. Test and training launchers are, however, subject to other constraints. The United States has made clear to the Soviets that we would consider the deployment of operational land-mobile ICBM launchers during the period of the Interim Agreement to be inconsistent with the objectives of the Agreement. The Parties have agreed that the term ICBM includes any land-based strategic ballistic missile capable of ranges in excess of the shortest distance between the northeastern border of the continental United States and the northwestern border of the continental Soviet Union. Launchers for fractional orbital bombardment systems are considered to be ICBM launchers.

On May 26, 1972, the United States had 1,054 operational, landbased ICBM launchers and none under construction; on that date, the Soviet Union had a total of land-based ICBM launchers operational and under active, construction estimated to be about 1,618.

(ICBM launchers for testing and training purposes are excluded in each case.) Under the freeze, the Soviet Union may complete construction of ICBM launchers under active construction on May 26, 1972. While the Interim Agreement remains in effect, neither Party may start new construction (nor resume previously suspended construction) of fixed ICBM launchers except test and training launchers.


Article II provides that the Parties shall not convert land-based launchers for light, or older heavy, ICBMs into land-based launchers for modern heavy ICBMs, such as the Soviet SS-9. All currently operational ICBMs other than the SS-9 are either "light" (the United States Minuteman and the Soviet SS-11 and SS-13) or "older" ICBM launchers of types first deployed prior to 1964 (the United States Titan and the Soviet SS-7 and SS-8).

Article II would thus prohibit the conversion of a launcher for an SS-7, SS-8, SS-11 or SS-13 ICBM into a launcher for an SS-9 or any new modern heavy ICBM, and would similarly prohibit the conversion of a launcher for a Minuteman or Titan into a launcher for a modern heavy ICBM. The Parties agree that in the process of modernization and replacement the dimensions of land-based ICBM silo launchers will not be significantly increased, and that this means that any increase will not be greater than 10-15 percent of the present dimensions. The United States has also made clear that it would consider any ICBM having a volume significantly greater than that of the largest light ICBM now operational on either side (which is the Soviet SS-11) to be a heavy ICBM.


Article III limits SLBM launchers and modern ballistic missile submarines to the numbers operational and under construction on May 26, 1972.

In addition, Article III and the Protocol permit launchers and submarines beyond 740 SLBM launchers on nuclear-powered submarines for the Soviet Union and 656 SLBM launchers on nuclear-powered submarines for the United States, subject to two constraints. First, additional SLBM launchers may become operational only as replacements for an equal number of ICBM launchers of types first deployed prior to 1964, or for launchers on older nuclear-powered submarines or for modern SLBM launchers on any type of submarine. Second, such substitution may not result in:

the Soviet Union having operational more than 62 modern ballistic missile submarines or more than 950 SLBM launchers, including all SLBM launchers on nuclear-powered submarines and all modern SLBM launchers on any type of submarine;

the United States having operational more than 44 modern ballistic missile submarines or more than 710 SLBM launchers. Construction of replacement SLBM launchers up to the limits under the Protocol would require the dismantling or destruction, under agreed procedures, of an equal number of ICBM launchers of older

types or of SLBM launchers on nuclear-powered submarines. Moreover, modern SLBM launchers deployed on any type of submarine would count against the total ceiling on SLBM launchers. Dismantling or destruction would be required to commence no later than the date on which sea trials of a replacement ballistic missile submarine begin and to be completed in the shortest possible agreed period of time. Thus the Soviets will have to begin dismantling older ICBM or SLBM launchers no later than when the 741st SLBM launcher on a nuclear-powered submarine enters sea trials, Dismantling or destruction, as well as timely notification thereof, are to be carried out in accordance with procedures to be agreed upon in the Standing Consultative Commission.


The Parties agree that the number of test and training launchers for ICBMS and SLBMs, including "modern heavy" ICBMs, shall not be increased significantly above the current number of test and training launchers for such missiles. It is understood that construction or conversion of ICBM launchers at test ranges shall be undertaken only for the purposes of testing and training. It is also understood that ICBM launchers for test and training purposes may be constructed at operational sites.


Article IV provides that, subject to the provisions of the Interim Agreement, modernization and replacement of strategic ballistic missiles and launchers covered by the Interim Agreement may be undertaken. The conversion of current United States ICBM launchers to handle Minuteman III missiles, the conversion of current submarine launchers to handle Poseidon missiles, and the construction of new submarines as replacements for older submarines, are not prohibited by the Agreement.


Article V of the Interim Agreement contains the same provisions on verification as appear in Article XII of the ABM Treaty. Verification will be carried out by national technical means operating in accordance with generally recognized principles of international law. Interference with, or deliberate concealment from, such means is prohibited. Neither Party is required to change its current practices of construction, assembly, conversion, or overhaul.

Article VI provides that in order to promote the objectives and implementation of the Interim Agreement, the Parties shall use the Standing Consultative Commission to be established pursuant to Article XIII of the ABM Treaty.

In Article VII the Parties agree to continue active negotiation for limitations on strategic offensive arms. This Article also provides that the terms of this Interim Agreement will not prejudice the scope and terms of the limitations on strategic offensive arms which may be worked out in the subsequent negotiations. It is expected that these subsequent negotiations will start in the near future.

The first paragraph of Article VIII of the Interim Agreement provides that it shall enter into force upon the exchange of written notices of acceptance, simultaneously with the exchange of instruments of ratification of the ABM Treaty.

Paragraph 2 of Article VIII provides that the Interim Agreement shall remain in effect for five years, unless earlier replaced by agreement on more complete measures limiting strategic offensive arms.

The third paragraph of this Article provides each Party with a right, parallel to that contained in paragraph 2 of Article XV of the ABM Treaty, to withdraw upon six months' notice if such Party decides its supreme interests have been jeopardized by extraordinary events related to the subject matter of the Interim Agreement.


I believe the Treaty limiting anti-ballistic missile systems, together with the accompanying Interim Agreement and its Protocol constraining strategic offensive arms, constitute the most important step in arms limitation ever taken by this country. In these agreements, the two most powerful nations on earth are adopting measures designed to curb the deployment of strategic arms.

The Parties have protected their vital interests during the careful negotiation and elaboration of these agreements. We did not agree to anything adversely affecting the national interests of our Allies, who were regularly consulted during the negotiations. The Congress has been kept closely informed throughout the negotiations. Ambassador Smith and other Delegation members conducted a total of thirty executive session briefings for Congressional Committees.

These Agreements should help to improve Soviet-American relations and preserve and strengthen international security and world order. The entry into force of these measures should significantly advance the cause of peace in the world, and I hope that they can be brought into force as soon as practicable. Respectfully submitted.

WILLIAM P. ROGERS. (Enclosures: (1) the ABM Treaty. (2) The Interim Agreement and associated Protocol. (3) Agreed Interpretations and Unilateral Statements.)


Declaration on Basic Principles of Relations Between the United
States of America and the Union of Soviet Socialist Republics,
May 29, 1972

The United States of America and the Union of Soviet Socialist Republics,

Guided by their obligations under the Charter of the United Nations and by a desire to strengthen peaceful relations with each other and to place these relations on the firmest possible basis,

Aware of the need to make every effort to remove the threat of war and to create conditions which promote the reduction of tensions in the world and the strengthening of universal security and international cooperation,

Believing that the improvement of US-Soviet relations and their mutually advantageous development in such areas as economics, science and culture, will meet these objectives and contribute to better mutual understanding and business-like cooperation, without in any way prejudicing the interests of third countries,

Conscious that these objectives reflect the interests of the peoples of both countries,

Have agreed as follows:

First. They will proceed from the common determination that in the nuclear age there is no alternative to conducting their mutual relations on the basis of peaceful coexistence. Differences in ideology and in the social systems of the USA and the USSR are not obstacles to the bilateral development of normal relations based on the principles of sovereignty, equality, non-interference in internal affairs and mutual advantage.

Second. The USA and the USSR attach major importance to preventing the development of situations capable of causing a dangerous exacerbation of their relations. Therefore, they will do their utmost to avoid military confrontations and to prevent the outbreak of nuclear war. They will always exercise restraint in their mutual relations. and will be prepared to negotiate and settle differences by peaceful means. Discussions and negotiations on outstanding issues will be conducted in a spirit of reciprocity, mutual accommodation and mutual benefit.

Both sides recognize that efforts to obtain unilateral advantage at the expense of the other, directly or indirectly, are inconsistent with these objectives. The prerequisites for maintaining and strengthening peaceful relations between the USA and the USSR are the recognition of the security interests of the Parties based on the principle of equality and the renunciation of the use or threat of force. Third. The USA and the USSR have a special responsibility, as do other countries which are permanent members of the United


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