Qcy 7 Sat Briefing Paper for the President's Press Conference May 11, 1960 GENEVA TEST Ball NEGOTIATIONS QUESTION Mr. President, on Saturday, you released an announcement which stated the United States! intention to resume nuclear tests. Could you explain why this decision was taken and why an announcement of the decision was made at this time? ANSWER First, I would point out that the United States is not resuming muclear weapons tests, The nuclear detonations referred to in the announcement are in no way related to nuclear weapons development. Such tests, when conducted, would be undertaken solely to further an improved capability to detect and identify underrround nuclear explosions, I might add in this connection that we are prepared to work out arrangements which provide assurance to those concerned that this would indeed be the only aim of such tests, an Second, it should be recognized that there is nothing really new in this announcement other than the fact that the present progra which has been under way for some time, will be considerably expanded in Fiscal Year 1961, The fact, for example, that the program will have to involve both chemical and nuclear detonations has been common knowledge since the Berkner Panel on Seismic Improvement recommended (June, 1959) such explosions as a necessary undertaking to improve detection and identification capabilities of the control system. Finally, as is well known, since January, 1959, in concert with the United Kingdom, we have asked the Soviet Union to join with us in a research program aimed at improving the capability of the proposed control network. Since we received no response to this proposal, we began our own national program. Recently, of course, the Soviet Union has indicated its willingness to join in such a program. Put now our own program is well under way and there is no sense in duplicating what we have already done. Therefore, we shall want to carry on our REPRODUCED AT THE DWIGHT D. EISENHOWER LIBRARY program. However, we wish as well to determine areas in which coordinated or joint research, including the use of nuclear detonations, would be profitable in the light of the Soviet Union's recent response. We hope to begin laying the groundwork for this type of program at the May Lith meeting (today) in Geneva of U.S., U.K. and U.5.5.8. scientists. GOX No. l2 FOLDER Kako

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