On February 4, the New START Treaty, the last remaining nuclear arms control agreement between the United States and Russia, is set to expire. Signed in 2010, the agreement caps deployed strategic nuclear forces at 1,550 warheads and 700 delivery systems. It also establishes one of the most extensive verification systems ever negotiated, including on-site inspections, continuous data exchanges, and government-to-government notifications about missile tests, weapons movements, and changes to nuclear forces.
