628. Memorandum from Brubeck to McGeorge Bundy, March 91

[Facsimile Page 1]

SUBJECT

  • United States Air Surveillance of Cuba

This memorandum is in response to your oral request to Mr. Sterling J. Cottrell for the legal aspects of United States air surveillance of Cuba, and the handling of the Cuban air surveillance issue in the United Nations should it be introduced there by the Castro government.

Legal Aspects

Under present circumstances, aerial surveillance of Cuba, including overflight of Cuban territory, is consistent with the Inter-American Treaty of Reciprocal Assistance of 1947 (the Rio Treaty) and with international law. It has been authorized by the Organization of American States. It is also consistent with our obligations under the Charter of the United Nations, since photographic surveillance is not a “threat or [Typeset Page 1631] use of force” as prohibited by Article 2(4) of the Charter, nor could aerial surveillance be considered “endorsement action” as that term is used in Article 53 of the Charter.

Possible Action in the United Nations

The Cubans and/or the Soviets could quite readily raise the question of our aerial surveillance over Cuba either in the Security Council or the General Assembly. In such circumstances, it might be desirable for the United States to put forward a proposal which would once again call for the establishment of UN on-site inspection in Cuba to ensure against the reintroduction of offensive weapons. Such a resolution would be an effective counter to a Soviet-Cuban proposal calling for an end to aerial surveillance. The likely result would be a stalemate with neither proposition being adopted by the United Nations.

/s/ Robert Kent
for
William H. Brubeck
Executive Secretary
[Facsimile Page 2]

Attachment

MEMORANDUM OF LAW
UNITED STATES AIR SURVEILLANCE OF CUBA

One of the means to verify implementation of the undertaking by Chairman Khrushchev to dismantle offensive missiles and missile sites in Cuba has been continued air surveillance by the United States. At least in part such surveillance has involved flights over Cuban territory.

Under general international law, the air space over the territory of a state is subject to the sovereign power of the state. The state controls entry into its air space, and intrusions without its consent are unlawful. This general rule is, however, subject to any arrangement to which a particular state may be a party. In the case of Cuba, those include the Inter-American Treaty of Reciprocal Assistance of 1947 (the Rio Treaty).

The Organization of American States, acting pursuant to the Rio Treaty, has authorized the continued surveillance of Cuban military activity by the United States. It is our conclusion that under present circumstances aerial surveillance of Cuba including overflight of Cuban territory is consistent with the Rio Treaty and with international law.

By its Resolution of October 23, 1962, the Council of the Organization of American States, acting as the Provisional Organ of Consultation under the Rio Treaty of 1947, unanimously agreed:

[Typeset Page 1632]

1. To call for the immediate dismantling and withdrawal from Cuba of all missiles and other weapons with any offensive capability;

2. To recommend that the member states, in accordance with Article 6 and 8 of the Inter-American Treaty of Reciprocal Assistance, take all measures, individually and collectively, including the use of armed force, which they may deem necessary to ensure that the Government of Cuba cannot continue to receive from the Sino-Soviet powers military material and related supplies which may threaten the peace and security of the Continent and to prevent the missiles in Cuba with offensive capability from ever becoming an active threat to the peace and security of the Continent;

[Facsimile Page 3]

It is to be noted that the overflights are directly related to the objectives set forth in the Resolution cited. That Resolution related not only to immediate dismantling and withdrawal of present missiles, but to assurances that Cuba could not continue to receive from the Sino-Soviet powers military materials which might threaten the peace and security of the Continent.

It is to be noted also that the cited Resolution authorizes “all measures” consistent with Article 6 and 8 of the Rio Treaty. These Articles read as follows:

6. If the inviolability or the integrity of the territory or the sovereignty or political independence of any American State should be affected by an aggression which is not an armed attack or by an extra-continental or intra-continental conflict, or by any other fact or situation that might endanger the peace of America, the Organ of Consultation shall meet immediately in order to agree on the measures which must be taken in case of aggression to assist the victim of the aggression or, in any case, the measures which should be taken for the common defense and for the maintenance of the peace and security of the Continent.

8. For the purposes of this Treaty, the measures on which the Organ of Consultation may agree will comprise one or more of the following: recall of chiefs of diplomatic missions; breaking of diplomatic relations; breaking of consular relations; partial or complete interruption of economic relations or of rail, sea, air, postal, telegraphic, telephonic, and radio-telephonic or radiotelegraphic communications; and use of armed force.

While aerial surveillance is not specifically listed in Article 8 among the measures on which the Organ of Consultation may agree, it is clear that a treaty which contemplates the use of force as the ultimate sanction must be interpreted to authorize lesser activities associated with military action. The facts of the overflights—and indeed photographs taken in the course of those flights—were before the Organ of Consultation when it was considering the Resolution of October 23, and it is clear that the member countries acted in anticipation that those flights would continue pursuant to the Resolution.

Aerial surveillance of Cuban military activity, including overflight of Cuban territory, is also consistent with the Charter of the United [Typeset Page 1633] Nations. Photographic surveillance is not “a threat or use of force”. Therefore, the prohibition of Article 2(4) of the Charter [Facsimile Page 4] does not reach this activity. Nor could aerial surveillance be considered “enforcement action” as that term is used in Article 53 of the Charter. Moreover, no organ of the United Nations has in any way called this practice into question.

CONCLUSION

Overflights and surveillance of Cuban territory are consistent with the Rio Treaty and have been authorized by the OAS. Cuba has not expressly consented to such overflights and might contend that decisions taken by organs of the OAS without its participation cannot lend validity to invasions of its sovereignty. However, this argument has not thus far been made, and it is no different from the argument that could be made against any of the collective measures taken by the Inter-American System in response to the Cuban threat. It is obviously the view of the members of the OAS that overflights of Cuban territory for reconnaissance are consistent with international law and with rights and obligations under the Inter-American System. Such activity is also consistent with the obligations of the United Nations Charter.

Abram Chayes
The Legal Adviser
[Facsimile Page 5]

Attachment

CONTINGENCY PLANNING FOR POSSIBLE UN CONSIDERATION OF CUBAN COMPLAINT AGAINST US AERIAL SURVEILLANCE

This memorandum is addressed to two principal questions: (a) how might Castro bring the question of US aerial surveillance to the United Nations; and (b) how would the United States deal with such a Cuban complaint in the UN.

Cuban Complaint to UN

The Cubans could request consideration of the Cuban situation either by the Security Council (either under the Cuban item still “technically” on the agenda or a new one) or the General Assembly. The Cubans would probably contend that our aerial surveillance is interference in Cuban affairs, a violation of Cuban air space, the use of force contrary to the Charter, and “aggression” by the United States against Cuba. The thrust of any Soviet-Cuban resolution would be to call for cessation of our aerial surveillance.

We would be in a reasonably strong position to deal effectively with such a line of attack as long as Castro remains adamant in his opposition to on-site inspection under the aegis of the United Nations.

[Typeset Page 1634]

As you will recall, in the two statements made by Ambassador Stevenson in the Security Council last fall, we purposely avoided getting into a legal justification of our position. There was and is no political profit in the United States taking the initiative in spelling out in the United Nations a legal justification for our position. Any legal rationalization along the lines stated in the Legal Advisor’s memorandum of February 14 should be undertaken in the Council only if we find it necessary and helpful to our friends on the Council.

Our strongest arguments are political. We would reiterate that the reason for relying on our own resources in conducting surveillance over Cuba is because of Cuban refusal to agree to United Nations inspection. We would recall that Khrushchev committed himself to inspection but could not carry it off because of Castro’s intransigence. We would continue to call for UN inspection.

As to formal Security Council action, it might be desirable for the United States to take the initiative in putting forward a resolution [Facsimile Page 6] containing two principal elements: (a) a reminder that Cuba has been unwilling to agree to international inspection; and (b) a request that the Secretary-General establish an on-site inspection team to assure against the reintroduction of offensive weapons into Cuba. We would be expected to state in the Council our willingness to terminate aerial surveillance at such time as effective UN on-site inspection was established. Such a resolution would be an effective counter to a Soviet-Cuban proposal calling for an end to aerial surveillance. The likely result would be a stalemate with neither proposition being adopted. While even some of our friends would have doubts about the strength of our legal case, they would support us on political grounds. Our resolution would get the required seven votes, but would be vetoed by the USSR. The Soviet-Cuban resolution would fall short of the required majority. (In addition to the five permanent members, the Security Council includes: Ghana, Philippines, Brazil, Venezuela, Norway and Morocco.)

It is doubtful that the matter would be pursued further in the Assembly. If it was, essentially the same strategy could be followed in the Assembly with results probably similar to those in the Security Council.

Ambassador Stevenson concurs in the above.

  1. U.S. air surveillance of Cuba. Confidential. 6 pp. DOS, CF, POL 31–1 CUBA–US.