At its peak, the United States had more than 31,000 nuclear weapons in its stockpile. Now, thanks to various arms control agreements and unilateral reductions, the United States has a total inventory of around 5,800 nuclear warheads.
After coming perilously close to losing all constraints on the world's two largest nuclear arsenals, the New START agreement was extended through 2026. But as both countries modernize their nuclear arsenals, the threat of a new nuclear arms race underscores the need for sensible non-proliferation and arms control cooperation.