The Cuban Missile Crisis was a 13-day nuclear crisis between the United States and the Soviet Union at the height of the Cold War. Learn more.
Infographics on Russia
World Nuclear Inventories
Updated June 17, 2024 There are nine nuclear-armed countries worldwide with about 12,000 nuclear weapons between them. The United States and Russia together have more than 90 percent of those weapons.
New START by the Numbers
After coming perilously close to losing all constraints on the world’s two largest nuclear arsenals, the New START treaty was extended through 2026. But as the United States and Russia modernize their arsenals, the threat of a new nuclear arms race underscores the need for continued cooperation.
U.S.-Russian Strategic Arms Control Agreements
America’s allies support New START extension
The New Strategic Arms Reduction Treaty (New START) will expire on February 5, 2021. If that happens, there will be no legal restraints on the world’s two biggest nuclear arsenals for the first time in nearly 50 years. The United States and Russia can choose to extend the treaty by up to five years, through […]
