A Timeline of Nuclear Disarmament

At the Ready
The arms race, SIOP notwithstanding, did not cease. The U.S. arsenal hit its peak in 1967, with 31,255 nuclear weapons. Russia at that time had fewer than 10,000, though its number would peak at 40,159 in 1986. The photos above show, from left, the red telephone at Strategic Air Command headquarters near Omaha and a Minuteman nuclear missile in its silo.

• Turning Russian Nukes into U.S. Energy