892.6363/138

The British Minister (Hall) to the Assistant Secretary of State (Acheson)

Dear Mr. Acheson: I am sending you the Memorandum on Financial and Economic Assistance to Thailand concerning which I spoke to you yesterday and which Mr. Butler and I referred to when we saw Mr. Hull yesterday and left with him an Aide-Mémoire on political relations with Thailand.

The Memorandum enclosed deals more particularly with the vital importance of denying supplies of rubber and tin to Japan and, through Japan, to Germany, and I am also attaching a note26 which gives in more detail the present position with regard to supplies of these commodities in the Far East.

The Annex26 to the Memorandum sets out the specific proposals which have been sent to Sir J. Crosby for transmission to the Thai Government. These proposals embody an offer to provide Thailand with stated monthly supplies of oil in return for delivery of stated proportions of the total rubber and tin production of the country.

You will note that Sir J. Crosby is instructed to put forward these proposals without prejudice to the negotiations between the Oil Companies and the Thai Government regarding their longstanding dispute over the marketing of oil in Thailand. (A further note26 is attached giving a brief history of this dispute.) At the same time, as is emphasised in the Memorandum, His Majesty’s Government consider that it is necessary to keep this dispute in its true perspective and that the vital importance of denying rubber and tin to Japan must be the more important objective to be won by the use of the bargaining counter of oil supplies. The United States Oil Companies will, no doubt, be guided in their attitude towards this by the advice which they receive from the State Department. His Majesty’s Government hope that the United States Government will appreciate the reasons which have led them to regard this as an issue which is likely to be settled satisfactorily only after working arrangements have been made to promote the economic independence of Thailand. If we are in agreement on this point it would be of great assistance to His Majesty’s Government if the State Department could advise the Oil Companies as to the line which they may have to adopt in order to co-operate in securing the desired results.

This question of rubber and oil in Thailand is closely paralleled with the similar problem in Indo-China and I should welcome a further talk with you on the position there. In both cases, this particular commodity aspect, though of vital importance in itself, forms only [Page 170] one side of the whole question of countering the spread of Japanese influence in the Far East and of stabilizing the situation there. This, I am sure you will agree, can only be satisfactorily achieved by a close cooperation between the United States and the British Empire.27

Yours sincerely,

Noel Hall
[Enclosure—Memorandum]

Thailand: Financial and Economic Assistance28

The principal developments in this question since Lord Halifax’s letter to Mr. Hull of May 6th have been as follows.

2.
Sir J. Crosby saw the Thai Prime Minister on May 8th to carry out the instructions mentioned in Lord Halifax’s letter of May 6th. The Prime Minister’s reaction was friendly but non-committal. He expressed gratitude for the statement that on suitable terms His Majesty’s Government would be willing to help Thailand as regards regular supplies of oil and a loan. As regards the proposal to make immediate delivery of aviation spirit, the Prime Minister said that he had sufficient stocks of this at present but that Thailand needed diesel oil and motor spirit very urgently.
3.
His Majesty’s Government, on receiving the report of this interview, decided to make two immediate and unconditional shipments of oil products of the type requested by the Prime Minister. Arrangements are being made for one shipment of a mixed cargo of a gas oil and diesel oil to take place shortly, to be followed by a further cargo of motor spirit and kerosene. The size of each cargo will depend on the vessels available but will probably amount to between six and seven thousand tons each.
4.
These shipments are being made to meet Thailand’s urgent needs, and no quid pro quo is being demanded. As regards the future, Sir J. Crosby has been instructed to initiate detailed negotiations with the Thai Government for financial assistance and for a regular supply of oil in return for the delivery, in whole or in part, of Thailand’s production of rubber and tin to Great Britain or to approved destinations, which would of course include the United States.
5.
His Majesty’s Government regard the limitation of supplies of rubber and tin to Japan, and through Japan to her Axis partners, as a matter of vital importance. Rubber is one of Germany’s chief deficiencies; it is believed that to meet her requirements in 1941 she will [Page 171] need to consume the whole of her existing stocks of some 21,000 tons and to import about 40,000 tons. Practically the whole of these imports must reach her via Japan, and there is ample evidence of the intention of the Japanese Government to supply her, as far as they can do so without endangering their own domestic position. It is calculated that Japan’s current requirements of rubber are about 50,000 tons, and therefore any rubber that she may obtain in excess of this figure is likely to be transmitted to Germany. She is likely to obtain at least 40,000 tons from Indo-China alone, and it is therefore evident that the destination of Thailand’s production amounting to some 45,000 tons is of vital importance. If it goes to Japan it is likely to meet practically the entire German deficiency. The British Government venture to hope that the United States Government will for their part take into urgent consideration all means of increasing their pressure on the Thai Government to sell as much as possible of their rubber to the United States. They believe indeed that an early approach by the United States Government on these lines would greatly assist the British in their negotiations.
6.
Similarly, tin holds a high place amongst Axis deficiencies, and there is evidence of a consistent policy of blockade running via Vladivostok and Dairen in the interest of Germany. Japan’s own requirements are estimated about 10,000 tons of metal per annum of which she needs to import about 8,000 tons. Of this she is likely to obtain this year some 5,000 tons from sources other than Thailand, so that her ability to purchase a sufficient amount to enable her to send further quantities to Germany in addition to maintaining her own supplies will turn largely on her success in buying from Thailand.
7.
In view of the above considerations it becomes of essential importance that supplies of rubber and tin from Thailand to Japan should be reduced to a minimum. To secure such limitation His Majesty’s Government consider that they must make all possible use of the only bargaining weapons available to them, viz., financial assistance, and supplies of oil, and to a lesser extent of jute. It is against this background that they feel that the dispute which has arisen between the Oil Companies and Thailand in regard to the method of supplying oil must be judged. The Oil Companies have expressed the hope that advantage would be taken of this occasion to induce the Thai Government to agree to a settlement of their long standing dispute with the Companies about the internal distribution of oil in Thailand. The Thai Government when this was put to them, refused to agree and His Majesty’s Government, though sensible of the desirability of settling this dispute in favour of the Companies, consider that the over-riding importance of dealing with the rubber and tin situation necessitates the full use of the oil weapon to achieve this objective, rather than that its force should be weakened by attempting [Page 172] to secure other objectives, however desirable in themselves. His Majesty’s Government trust that the United States Government will support them in this view, should the Companies continue to try and make the settlement of their dispute with the Thai Government a condition for resuming supplies of oil.
8.
The precise instructions in regard to the negotiations over oil, rubber and tin which have been sent to Sir J. Crosby are set out, very confidentially, in the Annexe to this Memorandum.30 These instructions involve proposals under which supplies of oil will be made available to Thailand, but only insofar as she makes and continues to make deliveries of rubber and tin to Great Britain or to approved destinations. If some agreement can be reached under which a definite relationship can be established on a short term basis between stipulated quantities of these commodities, this would form a test of the Thai Government’s desire and ability to resist Japanese pressure, and no commitment would have been entered into which would involve support of the Thais if failure to deliver the stipulated quantities of tin and rubber showed that they had passed under Japanese influence. There is reason to hope that if the United States Government would associate itself with a proposal along these lines and would press the Thai Government to sell as much as possible of the Thai output of tin as well as rubber to the United States, a Satisfactory agreement might still be reached.
9.
To put the matter quite briefly, His Majesty’s Government foresee the imminent possibility of Thailand agreeing to supply Japan with two essential war commodities in which Germany is very short, in such quantities as would enable Japan to supply in addition to her own needs a large part of those of Germany. This is of course an immensely serious danger. To avert it the British Government have little except finance, the procedure of friendly negotiation and the promise to Thailand of an assured supply of oil. These offer a prospect of at least gaining time. Purchase by the United States Government would, if effected, constitute a complete denial of these Thailand commodities to the Axis. To this end the United States Government have some additional bargaining counters; for instance His Majesty’s Government are informed that the Thai Government contemplate sending a mission to the United States in order to buy aircraft and oil. The issues being so vital, the United States Government will readily comprehend that the British Government are keenly desirous of obtaining their cooperation in preventing or at least hindering the Thais supplying indirectly two of Germany’s most important and hopeful deficiencies.
  1. Not printed.
  2. Not printed.
  3. Not printed.
  4. Under covering memorandum of June 5, Mr. Acheson forwarded this letter with its accompanying documents to the Chief of the Division of Far Eastern Affairs (Hamilton), the Adviser on Political Relations (Hornbeck), and the Adviser on International Economic Affairs (Feis), asking them to study the papers preparatory to a conference with himself “to discuss what should be done”. Mr. Acheson observed: “The matter seems pressing.” (892.6363/139).
  5. Filed separately under 892.6363/137.
  6. Not printed.