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 compares the number of START-accountable deployed warheads declared in the Seprember 1990 MOU with data from the January 1997 MOU, demonstrating the progress the parties have made in nuclear force reduction thus far.

—For more information, contact ACA.

 

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U.S. Strategic Forces:

Warheads by Delivery System¹

	September 1990	January 1997
ICBMs
MX	500	500
Minuteman III	1,500	1,770
Minuteman II	450	115
Total	2,450	2,385
SLBMs
Poseidon (C-3)	1,920	320
Trident I (C-4)	3,072	1,664
Trident II (D-5)	768	1,920
Total	5,760	3,904
Bombers
B-52 (ALCM)	1,968	1,656
B-52 (Non-ALCM)	290	56
B-1	95	93
B-2	0	17
Total	2,353	1,822
Total Warheads	10,563	8,111

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Soviet/Russian Strategic Forces:

Warheads by Delivery System¹

	September 19902	January 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	208
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	2,496
Bombers
Bear (ALCM)	672	504
Bear (Non-ALCM)	63	10
Blackjack	120	48
Total	855	562
Total Warheads	10,271	6,758

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Strategic Forces on Non-Russian Territory¹

	Belarus	Kazakhstan	Ukraine
ICBMs	0	0	414 (SS-19) 460 (SS-24)
SLBMs	0	0	0
Bombers	0	0	200 (Bear) 152 (Blackjack)
Total	0	0	1,226

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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]

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