OFFICE OF THE SECRETARY OF DEFENSE un 79 Uemo For R56 Advance copies were t Gompert 8 Thomson NSC PB has their chron DECLASSIFIED UNDER AUTHORITY OF THE INTERAGENCY SECURITY CLASSIFICATION APPEALS PANEL E O 13526 SECTION ISCAP APPEAL NO 2011-012 document 110 1 DECLASSIFICATION DATE December 3 2015 02 4 0533 R363 cy- cy cy PREPD Orig Addeem Ponies SECRETARY OF DEFENSE WASHINGTON D C 20301 3 1 MAY l979 secunmr AFFAIRS I reply re fer to 351As 79 MEMORANDUM FOR MR DAVID DIRECTOR BUREAU OF POLITICO- MILITARY AFFAIRS DEPARTMENT OF STATE SUBJECT SIDP Revision we #3 Several adjustments which will become effective October 1 1979 re being made to the Selected Attack Option 5A0 Structure of the US Single Integrated Operational Plan SIOP These adjustments re- flect evolutionary refinements in our targeting which will provide additional measures of flexibility and increase our ability to control escalation in the event of Warsaw Pact aggression against NATO see attached draft message for further detail 53 The JCS propose to introduce these changes into NATO militarx channels by message to SACEUR and SACLANT We believe it prudent that the subject be introduced simultaneously in NATO political channels The attached draft cable to USMISSION NATO recommends that Ambassador Bennett draw on the JCS message to inform NPG PermReps of the adjustments being made in the US SIOP U Request State transmit the attached cable We understand the last meeting of MPG PermReps planned before Fall is scheduled for June h HALIER SLOCOMBE Acting Assistant Secretary of Defense Attachment International Security Affairs a s cc Mr James Thomson - NSC as amends- 1 D l 0cl ul OSDFS lwr all In 31 Du 3m Classified by Director Review on 24 May 1999 FROH SECSTATE HASH DC INFO DEL BE USNMR BE NORFOLK VA CINCLANT1 VA USCINCEUR 6E DSTP OFFUTT AF31 NE 1 REVISION OF US SINGLE INTEGRATED OPERATIONAL PLAN 1 ON APPROXIMATELY JUNE H1 ARTS THE JOINT CHIEFS OF STAFF INTEND TO TRANSMIT TO SACLANT THE MESSAGE GUOTED THE JCS MESSAGE IS INTENDED TO INTRODUCE INTO NATO MILITARY CHANNELS INFORMATION ON THE RESTRUCTURING OF SOME SELECTED ATTACK OPTIONS IN THE US SINGLE INTEGRATED OPERATIONAL PLAN UHICH UILL BECOME EFFECTIVE OCTOBER 11 IRIS UE RECOMMEND THAT YOU DRAU ON THE JCS ADVISE NATO POLITICAL AUTHORITIES THROUGH THE NPG PERMREPS OF THE ADJUSTMENTS TO BE MADE IN THE SIOP JCS MESSAGE E JCS SEND SUBJ SIOP REVISION IA EASE AT THE APRIL 7R NUCLEAR PLANNING GROUP MEETING1 SECRETARY BROUN RECONFIRMED THAT US NUCLEAR UEAPON EMPLOYMENT POLICY CONTINUES TO STRESS THE NEED FOR US NATIONAL COMMAND AUTHORITIES TO HAVE VARIOUS SELECTIVE OR LIMITED OPTIONS Mum mm WGREF BE IN THE ROUTINE PROCESS OF REVIEUING SIOP OPTIONS NE CONTINUE TO NAKE EVOLUTIONARY REFINENENTS IN OUR TARGETING AND FORCE PLANNING THAT NILL PROVIDE ADDITIONAL MEASURES OF ELEXIBILITY TO THE STOP AND THAT RECOGNIZE ALLIED INTERESTS AND CONPLENENT 1 EXISTING THEATER NUCLEAR FORCES 3 TO THIS SELECTED ATTACK OPTION STRUCTURE NITHIN THE US SIOP IS BEING UPDATED TO INCREASE OUR To CONTROL ESCALATION IN THE EVENT OF NARSAU PACT AGGRESSION AGAINST NATO THESE SELECTED ATTACK-OPTIONS - NHICH FOR THE FIRST TINE COULD BE EHPLOYED-AGAINST BOTH CONVENTIONAL AND NUCLEAR THREATS FACING NATO 4 HILL PROVIDE A BASIS FOR CLOSER COORDINATION AND INTEGRATION OF US AND NATO PLANNING THE REFINENENTS HILL INCREASE THE FLEXIBILITY OF OUR NUCLEAR PLANS AND ENHANCE THE POTENTIAL FOR CONTROLLING ESCALATION IN AREAS PARANOUNT INTEREST TO NATO 3 i 33 THE REVISED OPTIONS ARE BEING DESIGNED TO PERRIT Q5315 E O 135267 0 C5 msgeR-H 03 97 Win FURIHER DETAILS REGARDING THESE PLANS BE PROVIDED YOUR STAFF VIA MILITARY LIAISON CHANNELS THROUOQ YOUR REPRESENTATIVES TO THE usrps Rva as HAY ma a REAS a COORDINATION suigngo 0 HUM L-z ISA OJCS-JS NSC PREPARED BY COL P R DRENNON X55615 w arm END QUOTE- VANCE - QC SECURITY CLASSIF ATION - DATE LO ND- INTRAOPFICE CONTROL SHEET 29 May 1973 - SUBJECT CURRENT DATE Coordination of JCS Message to SIOP Revisions SUMMARY Deacribe brie y the requirement background and action recommended U Origin JCS LS7 BACKGROUND As one result of the Nuclear Targeti p Policy Review the JCS are updating the 510 Selected Attack Option 5A0 structure to increase the flexibility of our nuclear plans and enhance the potential for controlling es calation in areas of paramount interest to NATO see proposed message at Tab A of JCS package for details PURPOSE The proposed message is intended to officially introduce into NATO military channels the restructuring of SIOP SAOS TO introduce the SAC restructur- ing in EQULLEEL channels we propose the draft message next under be transmitted to USMISSION NATO U RECOMMENDATION coordinate where indicated _on the JCS form 9 and approVe the draft message to USMISSI NATO WALTER SLOCOMBE 31 MAY 1979 - Acting Assistant Secretary of Defense - Dams international Security Affairs II if INTEENAL COORDINATION one INTERNAL COORDINATION INITIAL one ASSISTANT SECRETARY 2 AFF EXECUTIVE OFFICER x0 DIR AFF pp RECORDS a CONTROL RC OER DIR AFF pg PRINCIPAL ASSISTANT 5A OIR MEFR PF L5 1 Dir Nuclear Policy PB 737% DEP FOR Ncno TD DASD ECON PNINIA AFF i SPEC ASST FOR CONC REL DS - DIRECTOR IEA ED PRINCIPAL DASD I DIR sn 17 MILITARY 5551' fig PRINCIPAL PW SPEC ASST TO POASO OT I Dug FOR SA DIR FMR IF DIR SA PLANS 8 POLICY MD ss'r FOR ADMINISTRATION 40 I PLANS a PROGRAMS MP DASD FOR EAEIPAC AFF A I POLICY Ow MN DIR EA aPAc REG AD 0 I DEF SCTY ASST 3 DASD suns-NATO AFF 51 a mass-ran om EURRNATO APP ED I DEP OIR TD DIR I-A REGION IA SPEC ASST TB DASD NE AFF COMPTROLLER TC OIR NEOSA REG N5 DIR FOR SALES NEG T5 DIR AFRICAN REG COORDINATION OUTSIDE ISA Continue on reverse ACTIVITY A AND TITLE INITIAL DATE DUSDIPR was was J a 573 1 attainment NAME- DIRECTORATE AND SIGNATURE OF ORIGINATIN OFFICIAL becomes cm DRENNON x55819 SEGIIEI- SD I FAORM 15 PREVIOUS EDITIONS OF THIS FORM ARE OBSOLETE SECURITY CLASSIFICATION 76