REPORT ON COMPLIANCE BY THE SOVIET UNION WITH THRESHOLD TEST BAN TREATY

SEC. 903. REPORT ON COMPLIANCE BY THE SOVIET UNION WITH THRESHOLD TEST BAN TREATY (a) In General.—The President shall submit to Congress, not later than 30 days after the date of the enactment of this Act, a report discussing the use of the current official United States method of estimating the yield of Soviet underground nuclear tests to determine the extent to which the Soviet Union is complying with the 150 kiloton limit on underground nuclear tests contained in the Threshold Test Ban Treaty. (b) Form and Content of Report.—The report shall be submitted in both classified form and (if possible) unclassified form and shall include the following matters: (1) A discussion of whether past assessments made by the United States of the extent of Soviet compliance with the 150 kiloton limit contained in the Threshold Test Ban Treaty would have been different if the United States, in making those assessments, had used the current official United States method of estimating the yield of underground nuclear tests conducted by the Soviet Union. (2) The number of nuclear tests conducted by the Soviet Union after March 31, 1976, that have a central value exceeding 150 kilotons yield (estimated on the basis of the current official method used by the United States in estimating underground nuclear test yields), the central value of those tests (estimated on such basis), and the dates on which those tests were conducted. (3) The number, dates, and estimated central values of tests, if any, conducted by the United States after March 31, 1976, 101 STAT. 1137 which, if measured on the basis of the current official method used by the United States in estimating Soviet underground nuclear test yields (taking into account the differences between the United States and Soviet test sites), would have an indicated central value exceeding 150 kilotons yield. (4) The number of tests conducted by the United States after March 31, 1976, if any, which actually had yields exceeding 150 kilotons, the estimated central value of each such test, and the date on which each such test was conducted. (5) A description of all nuclear testing activities of the Soviet Union which the President has found to be likely violations of the legal obligations under the Threshold Test Ban Treaty, the dates on which those activities took place, and the specific legal obligations under the Threshold Test Ban Treaty likely to have been violated by the Soviet Union in conducting such activities. (6) A discussion of whether and, if so, the extent to which, the President, in arriving at his finding that several nuclear tests conducted by the Soviet Union constituted a likely violation of legal obligations under the Threshold Test Ban Treaty, considered the mutual agreement contained in the Threshold Test Ban Treaty which permits one or two minor, unintended breaches of the 150 kiloton limit per year to be considered nonviolations of the Treaty. (7) A detailed comparison of the current official method used by the United States Government in estimating Soviet underground nuclear test yields with the method replaced by the current method, and the date on which the current official method was adopted by the United States.