given reflects the different assr:mptions naae. the united states is considered fubject to a given ( sirnultaneous ) attack. For comparison, the requirernent for attacks r,rith similar consequences on the USSR are examined' Assumed. attacks against the USSR] 2 3 f+ I 2 3 l+Percentage of total industTy at risk ?\ 50 52 a/ The attacks 1-l+ assurte 100, 200, 300 and.500 1Mt. weapons respectlvely' aimed. at the To fargest metropolitan and industrial centres in the United States' To each case another 200-300 weapons of 100 ht' yield have been added' b/ Casualties were estinated from the 1 Mt' veapons only' c/ Numbers outside the Barentheses refer to a hypothetical attack with 1 l{t' r^,eapo; on1y, whereas those within parentheses asslxte an attack vith !0 kt' veapons ."fi. lttactr lto. )+ assrmes tbe 2OO largest metropolitan and industrial areas of theUssRtobetargeted'ands,ttackNo.lthel0largestaleasexcludingMoscow. d/ Numbers have been rounded to the nearest five'Assumed attacks against the United States Attack mrmber a/ Attack Total popul-ation m.mber at risk (mi11) L) at 20Total warheads and r^mhe ra^rr i rcd 300-l+00 4oo-5oo 500-6oo ?oo-B0oTotal megaton equivalents 1U+-156 *)+-266 3\)+466 5t+l+-566Total b/ casualtiei (milf) l+o -60 50-70 6o-80 70-90 Total warheads c/ and bonbs required 26 ( 181) 90 ( soo ) 1Ir\ ( 63] ) 303 (1 014 )P--^Ah+Eda ^ftotal industry destroyed 35_\5 )+ t-60 60_65 Total rnegaton c/ -^rrirro'l ente 26 (2i) 90 (l}o) 1\)+ (86) 303 (138)A/35/392 Brglish Annex