The "Enduring Stockpile" is the United States's arsenal of nuclear weapons following the end of the Cold War. During the Cold War the United States produced over 70,000 nuclear weapons. By its end the U.S. stockpile was about 23,000 weapons of 26 different types. The production of nuclear weapons ended in 1989, and since then existing weapons have been retired, dismantled, or mothballed. As of 2001 the Enduring Stockpile consisted of about 9,600 weapons of 10 types. As of 2004 about 3,000 of those weapons had been moved to the lowest readiness level, in which they are not dismantled, but no longer in active service.