U.S. and Soviet/Russian Strategic Forces

START I was signed July 31, 1991, and entered into force on December 5, 1994. Under the treaty, the five parties—the United States, Russia, Belarus, Kazakhstan and Ukraine—semi-annually exchange memorandum of understanding (MOU) data providing numbers, types and locations of accountable strategic nuclear weapons. The table below compare the number of START-accountable deployed warheads declared in the initial Seprember 1990 MOU with data from the July 1997 MOU, demonstrating the progress the parteies have made in nuclear force reduction thus far.

—For more information, contact ACA.

 

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U.S. Strategic Forces:

Warhead by Delivery System¹

	September 1990	July 1997
ICBMs
MX	500	500
Minuteman III	1,500	1,845
Minuteman II	450	55
Total	2,458	2,400
SLBMs
Poseidon (C-3)	1,920	320
Trident I (C-4)	3,072	1,536
Trident II (D-5)	768	1,920
Total	5,760	3,776
Bombers
B-52 (ALCM)	1,968	1,620
B-52 (Non-ACLM)	290	49
B-1	95	93
B-2	0	19
Total	2,353	1,781
Total Warheads	10,563	7,957

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U.S. Strategic Forces:

Warhead by Delivery System¹

	September 19902	July 19973
ICBMs
SS-11	326	0
SS-13	40	0
SS-17	188	0
SS-18	3,080	1,860
SS-19	1,800	1,020
SS-24 silo	560	100
SS-24 rail	330	360
SS-25	288	360
Total	6,612	3,700
SLBMs
SS-N-6	192	16
SS-N-8	280	192
SS-N-17	12	0
SS-N-18	672	624
SS-N-20	1,200	1,200
SS-N-23	448	448
Total	2,804	2,480
Bombers
Bear (ALCM)	672	512
Bear (Non-ALCM)	63	10
Blackjack	120	48
Total	855	570
Total Warheads	10,271	6,750

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Strategic Forces on Non-Russian Territory¹

	Belarus	Kazakhstan	Ukraine
ICBMs	0	0	384 (SS-19) 460 (SS-24)
SLBMs	0	0	0
Bombers	0	0	200 (Bear) 152 (Blackjack)
Total	0	0	1,196

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NOTES

1. Warhead Attributions are based on START I counting rules. This results in bombers having fewer warheads attributed to them than they actually carry. ON the other hand, even though all nuclear warheads from Ukraine have been removed to Russia, they remain START-accountable until the delivery systems have been destroyed. [Back to Table 1 , 2 or 3]

2. Includes weapons in Belarus, Kazakhstan, Russia and Ukraine. [Back to Table]

3. Weapons in Russia only. [Back to Table]

 

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Sources: START I Memorandum of Understanding, July 1, 1997; ACA.