Nickhere FYI:

Declared nuclear weapons states
Country        - No. of Warheads active/total         - Year of first test

United States- 5,735/9,960 - 1945 ("Trinity")

Russia (formerly the Soviet Union) - 7,200/16,000 - 1949 ("RDS-1")

United Kingdom - <200 (shortly to be reduced by 48) - 1952 ("Hurricane")

France - 350 - 1960 ("Gerboise Bleue")

People's Republic of China - 400 - 1964 ("596")

India - 40-50 - 1974 ("Smiling Buddha")

Pakistan - 24-48 - 1998 ("Chagai-I")

North Korea - 0-10 - possibly one in 2006 (unconfirmed)