United States Set off first nuclear blast in 1945. Conducted over 1,030 tests. Arsenal of about 12,070 warheads. Missile range of 8,100 miles.
Russia First test in 1949. Conducted 715 tests in total. Arsenal of about 28,240 warheads - but an estimated 18,000 of these are awaiting dismantlement or in reserve. Missile range of 6,800 miles
Britain First test in 1952. Conducted 45 tests in total. Arsenal of about 400 warheads. Missile range of 7,500 miles.
France First test in 1960. Arsenal of about 510 warheads. Missile range of 3,300 miles.
China First test in 1964. Conducted 45 tests, and helped Pakistan develop its nuclear capabilities. Arsenal of about 425 warheads. Missile range of 6,800 miles.
