For the purposes of this Agreement:

(a)

"Competent authority" means, in the case of the Swiss Confederation, the Federal Office of Energy and, in the case of the Union of Soviet Socialist Republics, the Ministry of Energy and Atomic Industry, or such other body as the Party concerned may notify the other Party, if any;

(b)

"Non-nuclear material" means:

1.

Deuterium and heavy water: Deuterium and any compound in which the deuterium/hydrogen ratio exceeds 1:5000, in quantities exceeding 200 kg of deuterium atoms for a period of 12 months.

2.

Graphite of nuclear purity: Graphite of a purity greater than 5 parts per million of boron equivalent and a density of more than 1.50 grams per cubic centimetre, supplied in quantities exceeding 30 metric tonnes for a period of 12 months.

(c)

"Nuclear material" means any "raw material" or "special fissile material" in accordance with the definition of those terms in Article XX of the Statute ¹ Of the Agency. Any decision of the Board of Governors of the Agency, taken in accordance with Article XX of the Statute of the Agency, which would amend the list of substances considered as 'raw material' or 'special fissionable product' shall have no effect at the end of this Agreement that when both Parties to the Agreement have mutually informed each other in writing of their acceptance of such an amendment;

(d)

"Recommendations of the Agency" in relation to physical protection means the recommendations contained in document INFCIRC/225/Rev. 2 "The Physical Protection of Nuclear Material" and its future revisions or any Any future amendment of the recommendations for physical protection shall have effect under this Agreement only when the two Parties to the Agreement have mutually informed each other In writing of their acceptance of such an amendment.

This Agreement shall apply to:

(a)

Nuclear materials and non-nuclear materials transferred between the Swiss Confederation and the Union of Soviet Socialist Republics for peaceful non-explosive uses, either directly or through a third country;

(b)

To all forms of nuclear material obtained by means of chemical or physical processes or by isotopic separation, provided that the quantity of nuclear material thus obtained is considered as falling within the scope of the Agreement that is equal to that existing between the amount of nuclear material used in its preparation and which is governed by this Agreement, and the total quantity of nuclear material so used;

(c)

To all generations of nuclear materials produced by irradiation of neutrons, provided that the quantity of nuclear material so produced is considered to fall within the scope of this Agreement only in the proportion where The amount of nuclear material subject to the Agreement, and used in that production, contributes to that production.

2. The elements referred to in paragraph 1 of this Article shall be transferred under this Agreement only to a natural or legal person designated by the competent authority of the receiving Party as being duly authorized to receive those Elements.

3. The competent authorities of both Parties shall conclude notification arrangements and other administrative arrangements in order to apply the provisions of this Article.

Nuclear materials and non-nuclear materials subject to this Agreement shall not be used for the development and manufacture of nuclear weapons or other nuclear explosive devices, nor for military purposes.

Each Party shall take the necessary measures to ensure adequate security of nuclear material subject to its jurisdiction and shall, as a minimum, apply physical protection measures meeting the requirements set out in the recommendations Of the Agency.

With regard to nuclear material, compliance with the commitments set out in Article III of this Agreement shall be verified, in accordance with the safeguards agreement between each Party and the Agency.

2. In the Swiss Confederation, the requirement referred to in paragraph 1 of this Article is satisfied by the Agreement concluded on 6 September 1978 ¹ Between the Swiss Confederation and the International Atomic Energy Agency on the application of safeguards under the Treaty on the Non-Proliferation of Nuclear Weapons. In the Union of Soviet Socialist Republics, the requirement referred to in paragraph 1 of this Article is satisfied if the nuclear material subject to this Agreement is subject to the Agreement concluded on 21 February 1985 between the Union of Republics Soviet Socialist and the International Atomic Energy Agency concerning the application of guarantees in Union of Soviet Socialist Republics.

3. If, for any reason or at any given time, nuclear materials subject to this Agreement are not, or will not be subject to Agency safeguards, mutually acceptable on the territory of a Party, that Party shall conclude Immediately an agreement with the other Party for the establishment of an arrangement of safeguards applicable to these nuclear materials, offering guarantees equivalent to those provided for in the safeguards agreement applicable between that Party and the Agency On the date of signature of this Agreement.

1. Nuclear materials and non-nuclear materials subject to this Agreement shall not be transferred outside the jurisdiction of a Party without the prior consent of the other Party.

2. The Parties may agree on an arrangement in order to facilitate the application of paragraph 1 of this Article.

The nuclear material referred to in Article II of this Agreement shall remain subject to the provisions of this Agreement until:

(a)

It is established that they are no longer usable or are practically no longer recoverable in order to be put in a usable form for any relevant nuclear activity from the point of view of guarantees; or

(b)

They have been transferred outside the jurisdiction of the Swiss Confederation or outside the jurisdiction of the Union of Soviet Socialist Republics in accordance with Article VI of this Agreement; or

(c)

The Parties otherwise agree.

2. Non-nuclear materials referred to in Article II of this Agreement shall remain subject to the provisions of this Agreement until:

(a)

They have been transferred outside the jurisdiction of the Swiss Confederation or outside the jurisdiction of the Union of Soviet Socialist Republics in accordance with Article VI of this Agreement; or

(b)

The Parties otherwise agree.

3. In order to determine when nuclear materials subject to this Agreement are no longer usable or are practically no longer recoverable in order to be put in a usable form for any relevant nuclear activity from the point of view Of the guarantees referred to in Article V of this Agreement, both Parties shall accept the Agency's decision. For the purposes of this Agreement, this Decision shall be taken by the Agency in accordance with the provisions on the waiver of the guarantees contained in the corresponding Safeguards Agreement between the Party concerned and the Agency.

1. Any dispute arising in the interpretation or application of this Agreement shall be settled by negotiation which the Parties undertake to conduct in good faith.

2. If, in spite of all their efforts, the two Parties fail to settle such a dispute through negotiation, the latter shall, at the request of either Party, be submitted to an arbitration tribunal which shall be constituted by three Arbitrators designated in accordance with the provisions of this Article.

Each Party shall designate an arbitrator who may be one of its nationals, and the two arbitrators thus appointed shall elect a third, national of a third country, who shall preside over the court.

If, within 60 days after the request for arbitration, one of the Parties has not appointed an arbitrator, each Party to the dispute may request the President of the International Court of Justice to appoint an arbitrator.

The same procedure shall apply if, within 60 days after the appointment or appointment of the second arbitrator, the third arbitrator has not been elected.

4. A majority of the members of the arbitration tribunal shall constitute a quorum. All decisions shall be taken by a majority of the votes of all members of the arbitral tribunal. The arbitration procedure shall be determined by the arbitral tribunal.

Tribunal decisions will be binding on both Parties and will be enforced by them.

1. This Agreement may be amended at any time with the written agreement of the Parties.

2. Any such amendment shall enter into force in accordance with the procedures set out in Article X of this Agreement.

1. This Agreement shall enter into force on the day following the receipt of the last notification confirming the completion of the internal legal procedures necessary for its entry into force.

2. This Agreement shall have an initial validity period of thirty years and shall be extended automatically, each time for periods of five years, unless one Party informs the other, by written notification, of its intention to terminate it six months before The next deadline.

Notwithstanding the termination of this Agreement, obligations accepted by the Parties in accordance with Articles II, III, IV, V, VI, VII and VIII shall remain in force until such time as the Parties otherwise decide.

Done at Moscow, on 6 April 1990, in duplicate, each in the French and Russian languages, both versions being equally authentic.